Bathtub overflow drain: operating principle, installation diagram and installation rules. How to install a drain in the bathroom with your own hands - detailed instructions How to choose a drain and overflow for a bath

No bathtub can do without a drain-overflow system. This device, unnoticeable in appearance, performs a number of important functions. And not only the convenience of using the bathroom, but also the safety of its operation depends on the correct choice and quality of installation.

This simple design, in principle, will prevent the bathroom from overflowing if the owners are not careful. Excess water will be flushed down the drain, and will not fall on the floor, will not spoil the floor covering, and even more so, will not spill on the heads of neighbors living on the floor below. And modern models of such systems also allow you to take a bath with maximum comfort, while at the same time becoming some kind of decorative decoration. So, if you plan to install a new bathtub or replace an old siphon that has expired, it makes sense to familiarize yourself with the information offered: bathtub overflow drain - device, types, installation rules.

Functions of the drain-overflow system, offered varieties

Among specialists, the drain-overflow system is often called more simply - bathtub plumbing. This doesn't change the essence. And to begin with, what tasks are assigned to this system?

• Firstly, the sealed frame of the drain and overflow holes in the bathtub, that is, the water from them, thanks to the existing seals, does not spill onto the floor, but is completely directed first into the system pipes, and from them into the sewer pipe.
• Secondly, due to the presence of a siphon, a water seal is created that prevents the penetration of unpleasant “odors” of the sewer into the room.
• Thirdly, it allows you to close the drain hole of the bathtub in one way or another while filling it.
• Fourthly, it will not allow overflow if the process of filling the bathtub for some reason has fallen out of the user’s field of attention. Almost all bathtubs are equipped with two holes - one of them is traditionally located in the bottom part, and the second on the wall at the maximum filling level. These outlets are connected to each other by a pipe or flexible hose before connecting to the sewer main. That is, if the water supplied to the bathtub reaches the level of the drain hole, it simply begins to be discharged through it into the sewer.
• Fifthly, in many models, some external parts of the system also represent a certain decorative value.

We can also add that there are drain-overflow systems in which the overflow unit is also combined with a water supply system to the bathtub. How convenient it is is difficult to judge without trying it, but some people like it.

Specialized stores offer a wide selection of drain-overflow systems made from different materials. This variety ensures that even the most demanding customers will be able to find a suitable option for their bathtub.

Prices for siphon overflow WIRQUIN

Overflow siphon WIRQUIN

Despite the variety of models offered, each of them has common nodes:

1 – neck installed in the lower drain hole of the bathtub. It requires reliable sealing during installation (as, indeed, any other components of the system), for which the necessary seals are always included in the kit. As a rule, it is equipped with a grill that prevents large debris from entering the siphon.

2 – a siphon that creates a water seal against the penetration of odors from the sewer. Due to the traditional lack of space under the bathtub, it usually has very compact dimensions, often having a flat shape at the bottom. At the same time, this knot, one might say, “ties” all the elements of the drain and overflow with each other and the sewer pipe.

By the way, the volume of the siphon matters, since too “miniature” ones may not cope with their task as a water seal. It is recommended to choose models in which the siphon holds at least 300 ml of water.

3 – pipe for connection to the sewer pipe. As a rule, it has a cylindrical section at the end, ideally sized for insertion into the socket of a standard sewer pipe with a diameter of 50 mm.

4 – overflow neck, installed on the top hole of the bathtub. Equipped with an angular pipe, which must be directed downward during installation. In many models, this pipe is already “by default” connected to the pipe going to the siphon.

5 – pipe connecting the drain and overflow necks. It can be rigid or corrugated, allowing configuration changes both in length and in bend.

6 – a device of varying degrees of complexity, designed to close the drain neck when filling the bath.

By the way, it is precisely by this criterion, by the mechanism for closing the drain neck, that drain-overflow systems are classified into several groups.

• Systems with simple mechanical overlap.
• Semi-automatic systems.
• The so-called automatic systems.

It should be noted that the names of some systems still have a significant degree of convention and are not entirely correct. But they have caught on and are used by both manufacturers and sellers of products. And in order to understand what each of the groups is, it makes sense to consider them in more detail, determine their advantages and disadvantages.

Features of simple mechanical systems

There is no trickery to the design of the mechanical system. There is an open overflow neck located on the wall of the bathtub. Sometimes it can be covered with a decorative overlay that does not reduce the overflow capacity and does not perform any other functions.

And the drain neck closes when necessary to fill the bath with a regular plastic or rubber stopper included in the delivery set. Usually there is also a chain or cord with which this plug is tied to the eye of the overflow neck - just so that it does not get lost.

This is still the most common version of the system that can be found everywhere. It is clear that “work management” comes down to the fact that when filling the bathtub with water, you must manually close the drain neck with a plug, and when emptying, the plug is simply pulled out of the drain.

The advantages of such mechanical drain-overflow systems include the following:

• Affordable kit prices.
• A simple algorithm for assembling and installing the system.
• Long service life.
• High reliability of the design - there is simply nothing to break here (this refers specifically to closing the drain).

There are few shortcomings, and even those can be considered rather conditional. So, some people don’t like the too “simple” look of the system, they say, it’s “yesterday”. Some complain about the inconvenience of controlling the supply and drainage of water while taking a bath. Another disadvantage is that sometimes the cork tends to get untied from the lace or chain and get lost (perhaps the reason for this is children’s playful hands). But purchasing a new plug for a ridiculous price is not difficult.

By the way, pay attention to one nuance, clearly visible in the illustration above. The siphon of the system may have an additional pipe for connecting a drain from another plumbing fixture. For example, if there is a washbasin next to the bathroom, then the drain from the sink can be directed exactly here, so as not to “produce” tees on the sewer pipe. Naturally, if there is no such need, then you should not purchase a siphon with an additional input. Or, if this input is not used, it should be securely plugged.

This version of the siphon design can be found on any of the drain-overflow systems under consideration.

Features of semi-automatic drain-overflow systems

The semi-automatic drain-overflow system is a more modern device, equipped with additional devices that increase the level of comfort in using plumbing equipment.

The general design of the system is similar to the mechanical version, but the following elements are additionally built into it:

• A kind of “control unit” that allows you to lower and raise the main drain plug. The “working element” itself can be a rotary handwheel, a button, a valve or a handle mounted on the overflow neck. As a rule, these elements will have a certain decorative effect.
• A cable or flexible shaft connecting this “control unit” and the mechanism for closing the drain plug. This element can be located outside or inside the pipe connecting the drain and overflow necks. A system with cables inside a tube would seem to look more aesthetically pleasing, however, its repair is much more difficult. Yes, aesthetics are not required here, since this unit of the system is not in plain sight anyway.
• A plug installed on the main drain hole that acts as a valve.
• A mechanism that converts the force of a cable or the torque created by a flexible shaft into translational movement of the plug to its extreme upper and lower positions.

The system works as follows:

• Turning the handwheel (handle) or pressing a button leads to loosening or tensioning of the cable, or to turning the flexible shaft.
• The transmitted force is converted into movement of a rocker arm or pusher located under the drain plug. The plug itself has a vertical rod in the lower part, which centers its position, since it fits into the guide sleeve of the drain neck, and its lower end rests against the swinging part of the rocker arm (pusher). Typically, this stem is equipped with a screw that allows you to change the overall length of the stem when adjusting the system.

If by turning the flywheel the pusher moves to the lower position, the drain plug falls freely onto the neck. Thanks to the precise fit and the presence of a seal, it is pressed tightly into its “saddle” by the pressure of the collected water, thereby ensuring an airtight shutoff of the drain.

When the flywheel is turned to another position, the pusher rises and transmits force to the rod, which, in turn, overcoming the water pressure, lifts the plug above the “saddle,” opening the way for water to drain from the bath.

This system also has its advantages and disadvantages, which you need to have information about.

So, the advantages of this design include the following points:

• The semi-automatic system allows you, without bending down to the bottom of the bathtub, by turning the handle or pressing a button to close or open the main drain plug.
• The semi-automatic device has a more aesthetic appearance than the traditional drain-overflow device.

The disadvantages of this system include the following points:

• If the device is used too intensively, the cable may begin to jam and get stuck over time.
• If the plumbing system uses hard water, then a limescale deposit may form on the rotating units, which will first impede their movement and then lead to jamming and failure.

It is clear that any mechanical link with a rotation unit always becomes an additional vulnerable point. The main types of breakdowns of such systems are the following defects:

• Damage or severe wear of the control cable (flexible shaft), up to its breaking or breaking.
• Mechanical damage (wear) of the plug, making it impossible to draw water into the bath. This may be abrasion of the o-ring or deformation of the valve part, that is, the plug does not provide a tight seal when closed. The rod may also become bent, causing it to not fit tightly to the seat. With any of these options, water will leak through the drain.
• Breakage of the control handle (flywheel) due to limescale deposits or even due to the application of excessive rotational forces.

As you can see, there are many vulnerabilities. Therefore, when choosing a semi-automatic drain-overflow system, it is worth purchasing a truly high-quality model produced by a company that has gained a reputation for reliability and provides guarantees for its products.

Automatic systems

To tell the truth, there is, of course, no talk of automation here. To close or open the drain you still have to apply mechanical force. The only thing is that it is not transmitted through some kind of intermediate mechanism, but ends up directly on the drain plug.

That is, this plug is equipped with a spring and a fixation system, and works on the “click-cluck” principle. The entire mechanism is located directly in the drain body.

To close the main drain plug, simply press it lightly with your hand or toes. It will move down and lock in this position. The plug is opened in a similar manner - pressing it will remove it from the stopper and lift it under the action of a spring to the upper position - the drain is open. Therefore, you can control the filling of the bathtub while lying in it and without getting up from your seat.

The advantages of such a drain-overflow system include the following qualities:

• Comfortable to use.
• An elegant appearance that becomes a decorative element for the bath.
• The absence of a transmission mechanism reduces the structure's vulnerability to breakdown or failure.

However, despite the modernity of the design and its ease of use, it also has its drawbacks:

• To release water from a fully filled bath, willy-nilly you will have to roll up your sleeve to press the drain plug button
• If the valve button fails, the entire drain-overflow system will have to be replaced.
• Failures of the retainer with the plug spring are also noted. True, these parts can be replaced if you purchase them for models from the same manufacturer.
• The small diameter of the drain hole, traditional for such models, can also be attributed to the “disadvantages” of the design, since the water leaves the bath rather slowly.

The likelihood of these breakdown problems occurring can be reduced by purchasing a quality product from a proven, reliable manufacturer who makes products only from high-quality materials.

There are also systems on sale that combine automatic drainage and overflow with a water collection function. The tap is located on the overflow neck. It turns out to be a kind of hybrid of a drain-overflow system with a mixer.

Such models are especially convenient in cases where it is not possible to conveniently position the mixer. For example, if the bathtub in the bathroom is installed far from the walls of the room.

But this case still applies to a greater extent specifically to mixers, since the system will require a rather complex connection to water pipes. And it will not be considered in the context of this publication.

Materials for manufacturing drain-overflow systems

For the production of drain-overflow systems, materials with certain qualities are used. For example, these include resistance to corrosion, temperature changes, as well as certain relevant hygienic standards.

Until recently, the main material used for manufacturing systems was predominantly ferrous metal - steel and cast iron, the main disadvantage of which is its unsightly appearance and susceptibility to corrosion. Therefore, today more modern materials are chosen for these devices. However, ferrous metal products are still found.

• Iron alloys (steel and cast iron) are reliable and durable materials. Although products made from it quickly lose their original aesthetic appearance, they are used properly for a long time. The susceptibility to corrosion and the considerable weight of such products are among their main disadvantages. Over time, threaded connections can become so stuck that they cannot be disassembled. At present, if such systems are found, then, apparently, they are from old stocks produced many years ago. They are not popular.
• In many systems, regardless of the main material used for making pipes, siphons, necks, external parts in contact with water are made of stainless steel. This option is optimal, better than just steel parts with a nickel or chrome plated coating - this is worth paying attention to when choosing a system.
• Copper and alloys based on it are significantly superior to plastic products in strength and durability. Devices made from these metals often have a protective coating of nickel or chromium applied by electroplating. Nickel is an excellent, reliable and durable coating; it can be distinguished by the bluish tint of the parts. With proper care, devices made of non-ferrous metals will last for decades.

To visually determine the specific type of metal made, it is necessary to thoroughly inspect the lower and upper necks and pipes.

Copper products have a red tint, and they are somewhat inferior in strength to other metals.

Brass (an alloy of copper and zinc) has higher strength characteristics. This alloy can be identified by its light yellow tint.

Bronze (an alloy of copper with tin or other metals other than zinc and nickel) is even stronger than brass, and in terms of resistance to various influences it can be compared with steel products. Bronze has a dark tint, close to even brown.

It should be noted that any non-ferrous metal is excellent for the production of plumbing accessories. And since the overflow drain system, by definition, will not experience any serious mechanical and baric loads, they are made of copper alloys and carefully installed and will last a very long time.

• Plastic drain-overflow systems have the most affordable price. They are great for any bathtub and have a high degree of versatility. With proper installation, careful operation and regular maintenance of the system, plastic products can last a long time.

If, of course, they are of high quality. Since on sale there are often systems with molding defects in plastic parts, with deformations, with poorly fitted threads in connections, made from brittle polymers or that acquire this fragility from contact with hot or cold water. Moreover, it can be difficult to predict this in advance. Strength indicators are of particular importance for parts that experience increased mechanical loads, that is, in semi-automatic systems, they transmit force to close and open the plug. It is they who most often become the “Achilles heel” of the kit.

That is, another argument to purchase products only from trusted manufacturers.

Criteria for selecting systems

When choosing a drain-overflow system, you should focus not only on the appearance of the structure, but also on other more important criteria, which include the following points:

• Manufacturer of the product. To be sure of the reliability of the device, it is recommended to choose products from trusted manufacturers. To do this, it is best to consult in advance the reviews of users who have already installed one or another option and have been using it for more than one year.
• System cost. For small budget options, the best option would be plastic equipment with a mechanical drain design. Automatic and semi-automatic systems are suitable for bathrooms designed in a certain style, as well as for those users who prefer comfortable operating conditions.
• Determination of the quality of the manufacturing material:

— high-quality plastic (polypropylene) must have dense walls;

— for products made of non-ferrous metal, the surface must be smooth without scratches or dents;

— for systems made of ferrous metal, it is necessary to pay attention to the integrity of the structure, as well as to ensure that there are no dents on the surface of the products.

• Compliance with the parameters of the bath, as well as compatibility of the siphon connections and the diameter of the sewer pipe. If the cross-sections of the pipes differ, you can use special plastic or elastic adapters.
• Completeness of the delivery set. The kit with the main parts must contain connecting rings and sealing gaskets of the appropriate sizes and configurations

• Additional system functions. For example, siphons may have several pipes for connecting to it, in addition to a bathtub, and other plumbing accessories. For example, if a sink or washing machine is installed next to the bathtub, you can connect one of these devices to the free pipe of the bathtub siphon. However, the branch does not have to be activated; if not necessary, it is closed with a sealed plug.
• Preference should be given to systems in which external parts in contact with water are made of stainless steel. This gives the required strength, oxidation resistance, and neat appearance.

Trusted manufacturers of plumbing fixtures

A considerable number of companies from different countries of the world present their products on the Russian market. A wide range of products allows you to choose the most suitable option for the drain-overflow system in all respects. It is recommended to give preference to those manufacturers whose products are certified in accordance with international quality standards.

Such companies include, for example, the following:

Illustration	Brief information about the manufacturing company
	Geberit is a Swiss manufacturer presenting a wide range of plumbing fixtures, including drain-overflow systems, in the mid-price segment. Geberit produces equipment in a wide range of models, so you can choose the appropriate option for your specific application. This company produces products from plastic, chrome steel, brass and copper.
	"Alcaplast" is a Czech brand. The company is among the top largest manufacturers of plumbing plastic products in Europe. The products of this manufacturer are distinguished by their reliability, simplicity of design, interesting design, and quiet operation.
	Kaiser is a German company that produces bathtub trims made of bronze and chromed steel. It is recommended to choose equipment from this manufacturer for bathtubs with deep bowls, for which it is difficult to find a siphon with non-standard sizes, since the company presents models in a wide range of sizes.
	Viega is a German company that has gained its reputation thanks to the quality and reliability of its products. It produces flush-overflow systems made of plastic, stainless steel, bronze and brass. Viega designers have developed interesting design options for visible parts of the structure. The market offers a wide range of devices in shape and color. Affordable cost and ease of installation make the products of this company very popular among consumers. The drain-overflow systems of this manufacturer are characterized by a long period of trouble-free operation.
	"Hansgrohe" is a German manufacturer that produces drain-overflow systems of various designs made of plastic, steel, as well as combined options. The products are reliable and easy to use. Visible design details can have different design solutions, so from the Hansgrohe assortment you can choose a model to suit any bathroom design.
	WasserKraft is another German manufacturer offering a variety of trim options for bathtubs and sinks. The company produces systems from black and light plastic, steel, bronze and combined materials. At the same time, the company's designers and engineers have developed variants of models with very unusual shapes. Products, especially those made from chrome-plated steel, are distinguished not only by their aesthetic appearance, but also by their high reliability and long service life.
	"Jacob Delafon" is a French manufacturing company that produces plastic products and combined options. This manufacturer is quite popular in Russia, as the systems have proven themselves to be highly reliable and easy to install and operate.
	"Triton" is a domestic manufacturer that produces “drain-overflow” devices from plastic of different colors, as well as combined design options. The products have an affordable price, but at the same time they are distinguished by very high quality and reliability. You can take it!

Recommendations for installation and operation

Self-installation of a drain-overflow system

The installation diagram for bathtub piping is almost the same for all types of drain-overflow systems. Even without plumbing experience, it is quite possible to assemble and install the structure yourself. To do this, just carefully study the instructions included with the product.

However, all manufacturer's recommendations must be followed as closely as possible, otherwise the device may begin to leak or not function properly. It is recommended to entrust the installation of automatic and semi-automatic systems to specialists, otherwise the warranty provided by the manufacturer will not apply.

To make it easier to understand the diagram given by the manufacturer, below, as an example, we will consider the assembly and installation of the simplest drain-overflow system. But first you need to figure out what the main elements of its design are called and where they are located.

In the diagram, wide red lines separate the location of the system parts outside and inside the bath. Blue numbers show plastic parts. Purple numbers are metal parts. Rubber seals are indicated in black.

It should be correctly understood that each system model may have its own characteristics. But the general principle of the location of the main parts and assemblies remains the same.

1 - Plug closing the hole in the bathtub drain neck.

2 - Protective grille on the neck, designed to trap large debris.

2c - O-ring installed between the grate and the surface of the bath.

3 - Gasket installed around the bathtub drain hole from below.

4 - Drain neck with pipes.

5 - A screw that tightens the protective grille from the side of the bathtub and the drain neck underneath it.

6 - Nut for the coupling screw. It is located motionless in a special slot in the drain neck.

7 - Removable part of the siphon (for example, for periodic cleaning of accumulated sediment).

8 - Plastic union nuts for connecting the siphon to the pipes - drain neck and outlet.

9 - Cone gaskets.

10 - Adapter for connecting to a sewer pipe. It can have a rigid structure or be corrugated and flexible.

11 - The gasket is flat.

13 - Outlet pipe for connecting the overflow pipe.

14 - Corrugated pipe connecting the drain and overflow necks.

15 - Sealing gasket.

16 - Plastic nut for connecting the overflow pipe with the drain and overflow pipes.

17 - Overflow neck, installed in the corresponding upper hole of the bath.

18 - Gasket ensuring a tight fit of the overflow neck.

19 - Protective grille for the overflow hole.

20 - Fastening screw for the overflow grille. The fastening system is almost the same as on the drain neck

The installation process of such a system is completely simple and consists of the following steps:

• The first step is to dismantle the old system, if it was standing. After this, the surfaces of the bath around the drain and overflow holes are thoroughly cleaned on both sides - there should be no traces of adhering dirt or rust there. It is immediately recommended to check the branch pipe (socket) of the sewer pipe to which the system will be connected - it must also be clean and have a high-quality sealing collar.
• Next, the outlet pipe of the drain neck (pos. 4) and the adapter (pos. 10), which drains water from the siphon into the sewer (10), are mounted on the siphon. To do this, fixing nuts (pos. 8) are put on the pipe and adapter, with the threads facing towards the connection joint, and then the conical gasket (pos. 9) is pulled on, with the tapering side also towards the connection.
• After this, the pipe and adapter are secured to the siphon using locking union nuts. It is better to do these operations first, as they say, on the table, since then, in the cramped conditions under the bathroom, it will be much more difficult to perform them.
• Next, a gasket (item 3) is placed on top of the drain neck (item 4) - usually a special recess is provided for it. In this case, the neck with its upper widened part is pressed from the bottom side of the bathtub to its drain hole. In this case, it should be positioned so that the pipe (pos. 13) for connecting the overflow pipe faces the desired direction. In addition, you must immediately try to position the position of the siphon in the most convenient way, taking into account the location of the outlet pipe and the sewer pipe.
• A sealing ring (pos. 2c) is also placed on the drain hole on the side of the bathtub, and a protective grill (pos. 2) is installed on top of it, which is pressed with a screw (pos. 5) screwed into the nut (pos. 6) located inside the drain neck. The screw is tightened to create a tight, permanent connection.
• A nut (pos. 8) is also put on the second end of the adapter (pos. 10) with the thread outward, then the cone gasket (pos. 11) is tightened. This side of the adapter is connected to the sewer pipe using a corrugated pipe, which in this case is not included in the kit. Some systems do not have such an adapter at all - a pipe with a flexible corrugated section for connection to the sewer is mounted directly from the siphon body. The branch pipe of this pipe is inserted into the sewer socket. The cuff located in the socket will ensure the tightness of this connection.
• The next step is to place a gasket (pos. 15) at the upper end of the overflow pipe, inside the locking union nut (pos. 16), after which the pipe is connected to the overflow neck (pos. 17).
• The overflow pipe is connected to the drain pipe in the same way.
• All that remains is to install the overflow neck (pos. 17) in place. The procedure is approximately the same as when installing the drain neck. A rubber gasket (pos. 18) is placed and the neck is pressed against the overflow hole on the outside of the bathtub. In this case, you should ensure that the flexible overflow pipe fits normally, bends smoothly along the outer surface of the bath, without “fractures”.
• On the side of the bathtub, a protective grille (pos. 19) is installed in the overflow hole, pressed against the neck and secured with a screw (pos. 20), the nut for which is fixedly located in the neck.

At this point the assembly can be considered complete. After checking the correct assembly, a test can and should be carried out. First, you simply let water into the bath - you will immediately see if there are any leaks at the main connections. Then you need to close the drain with a stopper and draw a full bath so that the water begins to come out through the overflow. At this stage, both the functionality of the overflow and the absence of leaks in this part of the system are checked. The final step will be to check the tightness of the connections during a volley discharge of water - it happens that when simply passing a stream, the connections are dry, but when increased pressure is created and when all the pipes are completely filled, signs of a leak appear. If the bath is empty and all connections are dry, the job is done efficiently. If there are signs of leakage, you will have to tighten the nuts, and possibly replace seals that have lost elasticity or are deformed. After this, the test is repeated, again in full.

It should be noted that many craftsmen additionally coat the connecting nodes, especially in the places where the gratings adhere to the surface of the bathtub, with silicone sealant. But when purchasing quality systems, this is usually not necessary. Unless the drain-overflow system is installed on a very old steel or cast iron bathtub, around the drain holes of which there are irregularities caused by corrosion or chipped enamel.

Recommendations for the operation and care of the drain-overflow system

In order for the drain-overflow system to serve for a long time and not unexpectedly fail, it needs appropriate maintenance that will help maintain its functionality. Preventive measures are not difficult to carry out, and they consist of the following actions:

• Periodic inspection of the system. In particular - connecting nodes, for leaks, as well as mechanical damage. It is especially important to do this if the lower part of the bathtub is not covered with a protective screen and there is a possibility, for example, of touching one of the parts during cleaning.

• Cleaning the siphon with citric acid diluted in hot water, or with one of the chemicals intended for cleaning sewer pipes. This event is recommended to be carried out at least once every three months.
• In some cases, it makes sense to change the rubber sealing gaskets of the system from time to time, since under the influence of water, especially if it is hard, they lose their elasticity and the joints may begin to leak. But this is rarely resorted to - usually seals, once properly installed, serve no less than the siphon and necks.
• It is necessary to periodically turn the rotating mechanism back and forth if a semi-automatic system is installed, especially if the bathroom has not been used for a long time.
• If a visual inspection reveals even minor cracks on the siphon, it must be replaced. Such damage can lead to a serious emergency situation, the elimination of which will cost much more than replacing the siphon.

* * * * * * *

If you follow all the recommendations for selecting and installing the system, as well as for regular maintenance, the drain and overflow will last a very long time without causing problems to the owners. Installing the system is not so difficult, the main thing is that all connecting nodes are sealed. But if during installation or during operation incomprehensible problems appear, then it is better to immediately contact a good plumber.

And to help those who are planning to install a bathtub drain and overflow system on their own, there will be a video below:

Video: How to install a bathtub drain and overflow system yourself

Modern human housing is equipped with a lot of equipment, without which it is difficult to imagine life. This includes. This is not just a container in which we carry out morning and evening procedures, but a complex set of elements that ensure fluid circulation. It is equipped not only with the main functional parts, but also has safety features. For example, protection against overflow, which allows you to avoid flooding your own and your neighbor’s if more liquid enters the bathtub than normal.

Simple drain

Like other equipment, the drain and overflow was originally mechanical and had a simple design for installation and dismantling, which did not require special skills. It includes the following components:

• the drain neck is designed to arrange the lower opening of the container and connect it to the outlet;

• the overflow neck is built into the narrow side panel of the bathtub and connected to the side outlet, which ensures that excess flows into the system;
• siphon(ducker) – a fragment to which the above parts are connected. Its main task is to transport liquid into the sewer and prevent the return of odor into the room thanks to its curved device;
• the hose connecting the overflow and the siphon is designed to transport water from the first to the second;

• a tube designed to move liquid from the siphon directly into the sewer.

This design is still found today in modern apartments. But the most common has become another – semi-automatic.

Semi-automatic drain and overflow

Today, the most common is the improved semi-automatic system. It is more practical and convenient. Like previous models, it includes a siphon and tubes for draining liquid. In addition, it includes:

1. a control unit designed to raise and lower the plug is a button, rotary ring, handle or valve designed to switch the plug to the “open” and “close” positions;
2. valve - a plug connected to the mechanism;
3. cable connecting the valve and control;

The semi-automatic drain and overflow begins to perform its functions after pressing a button or turning the valve on the control unit, behind which a cable is hidden that raises and lowers the lid.

As a rule, to create a more aesthetic and harmonious picture, the external parts of the system are decorated decorative panels. But there are also models in which the cable runs from the outside of the overflow hose. This solution is not so aesthetically pleasing, but at the same time it allows, if necessary, to easily repair or replace this part.

Important! If the cable runs inside the overflow hose, the design has a more attractive appearance, but if it breaks, it cannot be repaired; it must be completely replaced.

About quality

• One of the main advantages of a semi-automatic drain and overflow is the absence of hand contact with the liquid when operating it. This is very important, because the water in the container may have too high or, conversely, low temperature.
• But semi-automatic draining also has disadvantages. These include the unreliability of certain models. As a rule, this applies to cheaper, questionable products whose service life is short-lived.

Advice! Remember that non-ferrous metal cannot be cheaper than plastic. And if you come across similar products, you should not give them preference, as this is most likely a defect.

When purchasing a new bathtub in a store, salespeople will definitely ask you what kind of bathtub siphon you need - automatic or semi-automatic. And many are puzzled by such a proposal, because in such a simple device, it seems, it is impossible to automate anything.

Indeed, water flows spontaneously into the bend of a pipe or drain element of a special design. But now we are not talking about the principle of operation of the siphon, but about the convenience of controlling it.

New siphon designs

Let's figure out together what a semi-automatic bath siphon is, and what its advantage is over the usual budget solution made from plastic pipes.

Recycling the drain assembly and plug

The first innovation is the abandonment of the traditional cork design. Today in fashion:

• Plugs built into the drain hole;
• Controlled by remote crane;
• Which are often combined with a drain-overflow grate.

Installation method

The most important thing for consumers is that the siphon installation process has not become more complicated. And you won’t have to rack your brains about how to install a siphon on a new bathtub design. Everything is the same as before:

• The assembled drain assembly (with a plug inside) is screwed under the bathtub;
• The drain-overflow is also installed in its place;
• A drainage pipe is connected to the siphon tee;
• A control cable is connected to the siphon actuator;
• A control valve is installed in place of the drain-overflow grid.

Differences between an automatic and a semi-automatic

Having figured out how a classic siphon with a drain differs from modern analogues for a bathtub, it’s time to decide on the choice of option for your own apartment. And remember the store seller’s question - automatic or semi-automatic?:

• A semi-automatic siphon is a device with a built-in plug, controlled by a tap located at the overflow drain neck;
• An automatic siphon is the same design solution, but at the same time it independently opens the plug when the water flow through the overflow increases.

Structurally, these devices differ from each other:

• Another drain plug drive system;
• Another system for supplying water to the bath.

For reference: an automatic siphon is designed to protect the bathtub from overflow. In addition, you can control the plug not only with your hands, but also by simply pressing it, for example, with your foot.

What to give preference

The water supply is also combined with the drain and overflow. Thanks to a built-in unit that detects water pressure, the plug automatically opens when the bath is overfilled.

In addition, modern siphons differ in materials. Companies such as:

use high-quality brass and bronze to produce top models of siphons. It gives not only a noble look to the bathroom, but also lasts much longer.

Advice: if your bathtub is made of metal or acrylic and is not large in size, then you should not overpay for a LUXURY class product - a semi-automatic siphon will be enough.

Conclusions: We hope that we have clarified for you the differences between the bath siphons offered in the store. And you can make the right choice by purchasing the most suitable plumbing fixture for your technical features.

Bath siphon automatic semi-automatic differences how to install, Construction portal

bath siphon automatic semi-automatic differences how to install

Bathtub overflow drain - semi-automatic and automatic

Anyone who has been involved in arranging a room for water procedures on their own knows how many little things and additional accessories have to be purchased for this relatively small room. In addition to faucets, a washbasin and the water tank itself, it is very important not to forget and buy a high-quality, perhaps even automatic drain, overflow for the bathtub. What is it, what is the purpose of this design and what selection criteria are the main ones when purchasing it - let’s try to figure it out together.

Bathroom drain

Bathroom drain - what is it and what is it for? It is quite clear that the direct operation of the bath requires the mandatory removal of used and dirty water into the sewer. It is this important function that the drain structure performs, so its installation is extremely necessary immediately after installing the bowl itself.

It is impossible to drain water from the bathroom using a regular pipe or flexible hose, and not because this is a rather labor-intensive process - the use of such improvised means will not protect the room from the penetration of unpleasant odors from sewer pipes, as this will be done by a special drain. Its design has a special seal - a siphon, which prevents the penetration of sewer gases.

In addition to the siphon, the drain kit includes an overflow - a special device that allows you to drain used water through the top hole in the container. Overflow is necessary in case the bowl overflows with water and it is impossible for it to exit through the drain.

Important! You shouldn’t fully expect that a flood will be avoided - as practice shows, the device simply won’t be able to cope with high water pressure.

In the assortment of modern plumbing stores you can find a wide variety of types of this useful device. What types of products are there?

Bathroom drains and overflows - types and features

The simplest type of design is considered to be a standard overflow drain: water is drawn into the bathroom with the plug closed, and drained, accordingly, with the plug open. These are the kind of drains that were previously installed in any bathtub and were found in almost every apartment.

There are also more original products - they are made for bathtubs of non-standard models, but automatic and semi-automatic overflow drains are in greatest demand, and we will talk about them in more detail.

Semi-automatic drain – design features and advantages

A semi-automatic bathroom drain differs from other types of this useful mechanism in that the plug closing the lower drain hole is opened using a cable that connects the drain and overflow block of the device. Thus, when using the bathtub, it is enough to slightly turn the overflow cover and the drain will open (or vice versa close).

A semi-automatic machine is very convenient, because now, in order to start drawing water into the bowl, you don’t have to bend over each time and close the drain hole with a stopper. In addition, a semi-automatic bath overflow drain visually looks more attractive than simplified design analogues. A semi-automatic drain in the bathroom has only one drawback: with intensive use of the device, the cable may begin to get stuck and jam. There are models in which the cable is located outside rather than inside the structure, but in appearance they are significantly inferior to models with a hidden cable.

Advice: when choosing a semi-automatic bathtub drain, do not save money and buy a more expensive model made from really high-quality materials.

Automatic drain - what are the advantages of the mechanism?

The automatic bathtub drain and overflow works as follows: to open the drain hole, you need to press the button located on the plug and a special mechanism will open or close the hole. Visually, the automatic drain overflow also looks very aesthetically pleasing, but to release or draw water you will have to bend over - after all, the open/close button is always located at the bottom of the structure.

There are two types of automatic bath drain: regular and with water collection functionality. Such models will be a good choice for bathtubs in which there is no possibility of rational placement of the faucet. The design of this type includes special pipes for the water supply, which are connected to the overflow during installation. The bathtub is filled through the top hole and the advantage of this option is that it becomes impossible to flood the room with water - if there is excess water, the overflow valve automatically turns off and the water flow stops.

If you choose an automatic drain mechanism for your bathtub, buy a product from a reliable manufacturer with a good reputation. Poor-quality siphons quickly fail, and such a system will have to be replaced entirely; the machine does not provide for repairs in parts.

The material from which they are made is also important for these mechanisms. Which bathtub drain is best to buy - metal or plastic?

Modern overflow drain mechanisms can be made of ferrous or non-ferrous metal and plastic. Let's look at the features of each subgroup:

• Structures made of ferrous metal. Such drain mechanisms are distinguished by high strength and longevity in operation, but they cannot boast of external attractiveness. Such products must be additionally chromed or nickel plated. The purpose of such a coating is to give greater corrosion resistance to the mechanism;
• Mechanisms made of bronze, brass and copper are the more common variety. Bronze drainage devices are considered the most reliable. The advantages of this type of product also include ease of assembly and disassembly and high corrosion resistance;
• Polypropylene structures for overflow drainage look the most aesthetically pleasing, but are noticeably inferior in reliability to metal ones. In addition, polypropylene drains do not look good with expensive designer bathtub models - plastic looks too cheap against the backdrop of luxury ceramics or natural stone.

Tip: It’s easy to determine the base material of the structure - just carefully examine the tube connecting the drain and overflow blocks. For a bronze mechanism it will have a dark brown color, for a brass mechanism it will be yellow, and for copper it will have a characteristic red tint.

How to install the drain mechanism yourself?

First, you should carefully read the instructions and all documentation included with the kit: all installation recommendations must be strictly followed, otherwise the mechanism will not work correctly or will not work at all.

An important installation point is that the hole for the drain should not be lower than fifteen centimeters from the surface on which the bathtub itself is installed.

Pay attention to the stability of the container - the bathtub should not wobble, especially for acrylic and metal bowls, which have little weight and, as a result, poor stability.

Then a special tee should be attached to the decorative grate of the drain hole. The connection is carefully treated with sealant or additionally covered with gasket material. The siphon is mounted on the lower end of the tee, and a connecting tube is attached to its side.

The next stage of installation work is to attach an angle to the tee, which will connect the mechanism to the sewer. Do not forget that each connection in the installation of an overflow drain requires treatment with a sealant and mandatory inspection before drawing water. To do this, you need to fill the bowl with a little water and then perform a test drain. If there is no water leakage, the mechanism is installed correctly and is ready for operation.

Metal drains should be installed carefully and without sudden movements - they are not very flexible and can burst if bent too much.

Conclusion

In conclusion, useful advice from experts: if after installing the bowl you plan to cover it with facing material, be sure to leave a special hatch or door - the drain mechanism of even the most reputable company can fail and you will need access to it for replacement or partial repair.

Bath overflow drain, semi-automatic, automatic - advantages and disadvantages

Bathtub overflow drain. Automatic and semi-automatic. Advantages and disadvantages of drains. Self-installation and purchasing tips.

Bathtub drain and overflow: how to choose and replace

It would seem that what could be simpler than a regular siphon for draining “waste” water into the sewer? This is a curved plastic or metal tube that connects the bathtub outlet to the drainage network. However, designers and constructors felt that modern plumbing needed something more stylish and convenient.

As a result, an automatic bathtub overflow was born. Due to rather radical changes in the design, the appearance of both the parts that are mounted in the bathtub outlet and the part that is installed in its end part has also become different. What has changed, how it works, and how to choose the appropriate model of a new device is further in this article.

One of the models of semi-automatic overflow plug

A traditional bathtub drain consists of the following elements:

• Siphon
• Exhaust intake grille
• Overflow receiver
• Overflow receiver grids
• Spout tube
• Branch for connection to sewerage

By the way, there is also a children's bathtub with a drain on sale. The operating principle of this device is very simple: a duplicate outlet is installed in the end wall of the bathtub at a certain height from its top (usually 50 mm from the edge of the bathtub to the center of the hole).

Important information! A synonym that is sometimes used to refer to bath drains is the term “piping,” which not everyone knows about.

In this regard, when purchasing a complete set yourself, misunderstandings can sometimes arise.

A receiving block is attached to it on the outside, and a decorative grille of one kind or another is attached to it on the inside. The receiving block is connected via an outflow tube to the lower outlet pipe, in front of the bath siphon body (the latter, by the way, has recently been made monolithic, but there are also models with a collapsible settling bowl).

If for some reason the bathtub begins to overflow, the water, having reached the lower overflow level, flows through the spout into the outlet, and then into the sewer. Such a simple and unpretentious bathtub drainage device nevertheless provides virtually guaranteed prevention against flooding of the bathroom floor and other related troubles.

These products were previously made almost exclusively from plastic. Now there are many metal models - made of copper, bronze, brass or chrome steel. The Viega bath overflow has proven itself very well in this market, as it optimally combines reasonable price and reliability.

Automatic drain

One of the pioneers in the production of automatic drains was the German company Kaiser. The outflow tube in this device, as well as the overflow receiver, are no different from the old designs. The whole point of the innovation is in the special design of the plug that covers the outlet hole.

It has a special spring with a lock. With this device, after pressing, the button plug is either recessed, blocking the exit of water, or, on the contrary, opens, allowing water to go into the sewer.

This release is quite convenient after taking a bath - just press the button with your foot, for example, and the water will start pouring out. Accordingly, after the second press, the water in the bathroom does not drain.

Automatic drain system

A children's bathtub with a drain can also be equipped with such a system; here it is very practical - you do not need to turn the entire bathtub over, just press a button and wait for the water to flow out. In ordinary bathrooms, the use of such a device can only be justified by aesthetic considerations and some convenience when taking water procedures.

Otherwise, it is no different from a regular cork, except that the increased complexity in low-quality products often leads to breakdowns. It is almost impossible to replace or repair such a plug, which forces you to completely change the entire piping.

The most popular materials from which such a bathtub overflow is made are bronze and brass, but there are also plastic samples. However, experts strongly discourage the use of plastic products - their tendency to breakage is even higher.

Semi-automatic drainage systems

The design of a semi-automatic is very similar to an automatic.

It has the following components:

Well, and, of course, like any drain - a siphon with a discharge tube. The control unit is available in several basic versions.

Basic design of a semi-automatic device

• Swivel ring around the decorative cover (like the Roca bathtub overflow, for example)
• Full grip handle
• Special valve on the cover
• Button

In any of the options, the overflow hole itself is hidden at the bottom of the entire block. With a certain action - turning or pressing, the force is transmitted through the cable to the lower valve plug. In most cases, the plug is attached to the release cuff body on one side using a rod.

In one way or another, the rod is connected to the cable, and when the latter is tensioned or released, it opens or closes the drain hole, respectively. This allows you to regulate the supply and drainage of water, whether in the bathtub or outside it, without bending over, which is very convenient.

An additional plus is the ability to open the plug when the bath is filled without putting your hand in the water - it may be too cold or hot.

One of the control mechanism options

It has a different device and control cable - in some models it runs outside the overflow hose, in others it runs inside it.

The second solution is more aesthetically pleasing, especially in cases where the walls of the bathtub are open. However, it also has its drawbacks - if the cable gets stuck or it breaks, repair is almost impossible; the entire bathroom drain will need to be replaced.

Whereas in a model with an external location, you can fix the cable without problems. It is worth paying special attention to the installation of metal drains. Compared to plastic, metal has relatively little flexibility and is more fragile.

Therefore, if installed incorrectly, it can be damaged - and this, again, will result in the purchase of a new set. Therefore, all processes must be performed exactly as the instructions indicate.

If you are going to cover the outside of the bathtub body with any cladding, be sure to leave a hatch or similar opening for maintenance and repair of the drain and water supply pipes.

No matter how reliable these products are.

Sometimes they break too. If an accident occurs on a tightly sealed device, in addition to the device itself, cosmetic repairs of the entire bathroom may be required.

However, the fact that such a solution is very convenient does not mean that you can ignore the quality and brand of the manufacturer. After all, the device of a semi-automatic device is quite fragile, and when taking a shower with the plug open, many accidentally catch it and break the low-quality product.

Therefore, if the water does not drain well in the bathroom, it is worth checking whether everything is in order with the plug, since the siphon itself breaks and becomes clogged extremely rarely. Perhaps the drain holes in it are simply clogged and the bath needs to be cleaned.

In general, for those seeking additional comfort, water release systems with various additional functions are certainly useful.

But at the same time, common sense should not be neglected: it is worth purchasing high-quality components, such as a Geberit or Vega bath overflow drain, installing the parts correctly, and handling the mechanics carefully during subsequent operation. Then automation will actually be useful and not become a source of problems.

title=” Bathtub overflow drain: instructions for replacing an automatic and semi-automatic device from kaiser, gosa, geberit”] 248) Bath overflow drain: instructions for replacing an automatic and semi-automatic device from companies such as kaiser, gosa, geberit, viega, and also what do the water in the children's bath does not drain.

Choosing the best drain and overflow system for a bathtub

When installing plumbing equipment It is important to make the right choice in favor of a specific model. This article will focus on the bathtub drain-overflow system. To figure out which siphon is better, you should carefully study the pros and cons of each type of drainage system. A correctly selected siphon model will add even more comfort to water procedures.

Drain-overflow system: technical features

The piping, also known as the drain-overflow system, is a structure consisting of pipes hermetically connected to each other. It is this that ensures the drainage of wastewater into the sewer system and also protects the bathtub from overflowing.

The drain-overflow system must be equipped with a siphon, which prevents the appearance of an unpleasant odor in the bathroom. Water from the overflow hole enters the sewer using an auxiliary pipe. Most often, a corrugated tube is used, which can be stretched to the desired size and bent to the drain in any direction.

Advice! When choosing a drainage system, you need to pay attention to all the external parts that frame the bathtub openings. In a quality product they are made of stainless steel.

When buying a drainage system for a bathtub, you should definitely pay attention to the quality of the parts. It is also important to check the presence of seals and cuffs; the absence of one of them will certainly lead to a flood after the first filling of the bath. Seals are necessary to ensure the tightness of the structure and prevent leakage.

At the moment there is a large selection of harnesses. From simple plastic siphons to chromed metal structures with special ornaments. Modern technologies make it possible to satisfy the requirements of the most capricious customers. Drain-overflow systems are divided into:

• a simple siphon equipped with a stopper;
• semi-automatic system;
• automatic drain-overflow system;
• filling machine.

Each of these systems has its own advantages and disadvantages. And in order to decide which bathtub drain and overflow is better, it is necessary to consider each design in more detail.

Disadvantages and advantages of the automatic system

An automatic drain and overflow system for a bathtub is one of the most complex designs. In its structure, it is not much different from any other. The main feature of such a piping is that its drain part is equipped with a “click-clack” valve.

The system is very easy to use and does not require the use of any additional devices: rotary levers or locking plugs. With a light press, the user closes the drain hole, and repeated action will allow the water to flow into the sewer pipe. It is very convenient to control the valve with your foot while directly in the bath. You just need to step on it while standing in the shower.

However, this system also has a number of disadvantages; it should be noted that the automatic siphon is:

1. Expensive pleasure. A good quality automatic system will cost several times more than a conventional mechanical siphon with a bathtub stopper. That is why the choice often falls on cheaper models.
2. Frequent breakdowns. A system with automatic shut-off of the drain hole, made of insufficiently high-quality materials, can quickly fail. When purchasing such a design, you should pay special attention to the company and country of the manufacturer. German manufacturers have proven themselves best: they carefully monitor the quality of the product in order to maintain the brand.

You should also know that if the spring that holds the valve and operates it (the most vulnerable part of the automatic system) fails, the entire structure must be replaced.

Semi-automatic siphon and its best aspects

The semi-automatic drain-overflow system, despite its ease of use, is a rather complex design. In addition to the standard hermetically connected pipes for draining waste water and an overflow system, models of this type are equipped with a shut-off valve, which is actuated using a lever mounted on the overflow hole. It is made in the form of a decorative handle or valve.

Operating such a drainage system is quite simple. The user turns the control lever 90° and the shut-off rod rises, opening the drain hole, and if you turn the handle in the opposite direction, the rod lowers, making it possible to fill the bath with water.

The system works thanks to an auxiliary cable, the tension of which allows the plug to rise and fall. The design of the valve control handle can be varied.

The overflow device in such systems is hidden under the control handle of the drain structure. This gives the harness a more aesthetic and stylish look. Also, one of the advantages of such a system is ease of use. By turning the handle located at the top of the bathtub, the user does not have to wet his hands or once again bend down to the bottom of the bathtub.

And if we talk about the disadvantages of such a system, it should be pointed out that the design is quite complex and has a lot of connecting and moving parts, and therefore attention should be paid only to models from responsible and conscientious manufacturers who have already proven themselves in the plumbing fittings market.

There is a type of semi-automatic drain-overflow system that allows you to fill the bathtub. This is the most complex of all automatic and semi-automatic harnesses. To install such a structure, it is necessary to supply water pipes to it. Using this type of piping, you can eliminate the installation of a mixer for filling the bathtub.

Economical system. Cheap and easy.

The simplest design of a bathroom drainage system is a mechanical drain-overflow system. There are no moving parts or levers and therefore it is the most reliable of all other types of harness.

The system consists of several main parts:

1. Drain neck. Placed at the bottom of the bathtub, connected to the siphon.
2. Overflow pipe. Mounted on the overflow hole.
3. Corrugated tube. With its help, the overflow pipe and the main part of the system are connected.
4. Siphon. A U-shaped pipe that acts as a shutter. Prevents the spread of odors from the sewer.
5. Spout pipe. Ensures the passage of wastewater into the sewerage system. Such a pipe can be a corrugated hose or a straight pipe, depending on the location of the sewer outlet.
6. A plug blocking the drain hole. Most often it is connected by a chain to a grille installed on the overflow.

This system is very easy to assemble and install; anyone can handle it, even without in-depth knowledge in the plumbing industry. As a rule, failure of such a siphon is caused by wear of the sealing joints.

Advice! To increase the service life of sealing cuffs and gaskets, they can be pre-lubricated with silicone grease.

Plastic or metal?

Very often, buyers ask the question: “What material should the drain-overflow system be made of?” Currently, manufacturers use several basic materials for the manufacture of strapping:

• plastic;
• black metal with chrome plated;
• non-ferrous metal;
• stainless steel.

Plastic siphons have the most favorable cost and a relatively long service life. But their aesthetic appearance leaves much to be desired. The same can be said about ferrous metal systems. Manufacturing companies are currently increasingly resorting to the use of such raw materials.

Non-ferrous metal and stainless steel are the most expensive materials, but they are practically not susceptible to corrosion. Products made from such raw materials have a special style and can complement the overall look of the bathroom decor. For example, if the design idea was for a retro-style bathroom, then a siphon made of processed brass in an open bathroom (without using a decorative screen) will look very organic and stylish.

When purchasing a bathroom fixture, always pay attention to the quality and brand of the manufacturer. These are the determining factors in choosing a drainage system. This is especially true for bathtubs covered with decorative panels and screens. The user’s desire is to look under the bathtub as little as possible, so it is better to install the highest quality construction, and thus insure yourself against leaks for a long time.

Which bathtub drain and overflow is best to choose?

This article will focus on the bathtub drain-overflow system. To figure out which siphon is better, you should carefully study the pros and cons of each type of drainage system.

For safe use of the bathtub, all modern devices are equipped with a special overflow, which is connected to the outlet into a single structure. The drain-overflow system for a bathtub is a design made of combined pipes that prevent water from overflowing over the edge of the bathtub during the filling process and ensure its drainage into the sewer after the end of water procedures.

Such systems are available in several types: traditional drain, semi-automatic and automatic system. Let's consider the design features and the principle of their operation.

Classical

The traditional system is a design familiar to many, which consists of a drain and overflow holes protected by a mesh. To fill the bathtub, the drain is plugged with a stopper. The advantage of such a system is the simplicity of its design: it is easy to install and disassemble in case of blockage. Another plus is that the large diameter of the overflow receiver is guaranteed to prevent the bathtub from overflowing, even if the water is drawn very intensively. The drain funnel also has a large diameter, ensuring the rapid release of a significant volume of water into the sewer. The disadvantages include a simple design, which does not always harmonize with modern bathroom renovations.

The procedure for installing a simple drain is as follows:

• Dismantling the old device, cleaning seats where dirt often accumulates.
• Installing the lower drain pipe. A rubber gasket is used to seal the connection.
• Installation of the overflow pipe is carried out according to a similar scheme.
• Siphon connection. A cone-shaped plastic gasket is used to seal the connection of the pipes.
• The siphon and overflow pipe are connected using a flexible hose.
• The siphon is connected to the sewer using a corrugated pipe.

Advice! For better sealing, it is recommended to additionally apply a thin layer of silicone sealant to all rubber seals.

Semi-automatic

This type of system is equipped with a manual control unit mounted on the overflow hole and consisting of a rotary knob or ring that activates the adjustment cable. In turn, the second end of the cable is connected to a drain plug-valve, which, depending on the position of the handle, rises to drain water or lowers to fill the bath.

The advantages of this device include the ability to open the drain without putting your hand in the water, and a variety of design solutions. Also, the advantages include a modern and stylish design. One of the disadvantages is the fact that the holes in the valve plug are often clogged, which reduces the intensity of water flow. Also, when taking a shower with the plug raised, there is a risk of damaging the valve, so it is recommended to choose durable products.

The installation of a semi-automatic design is slightly different from the installation of a conventional siphon, since the drain pipe on which the lifting mechanism for the plug is installed is already connected by a flexible pipe to the overflow pipe on which the control unit is installed. Also connected to this structure is a cable, with the help of which the drain plug-valve is raised or lowered. The cable is located both inside and outside the overflow tube.

The drain and overflow pipes of the semi-automatic system are connected to each other

The installation procedure is as follows:

The main breakdowns of the semi-automatic drain and overflow system:

1. Mechanical damage to the plug. Most often, replacement of the valve is required, since when the stem is bent, the plug no longer fits tightly into its seat and does not block the drain.
2. Broken cable. During operation, the control cable wears out and breaks. To change it, you need to remove the decorative covers located on the control units and install a new cable.

Machine

An automatic bathtub drain and overflow is a spring-loaded valve plug that closes the drain hole when you simply press it. When pressed again, the plug rises and opens a hole for draining water. This system is often called “click-clack”.

The advantages of automatic draining include the following factors:

• Relatively simple design, minimum of collapsible elements.
• Easy to use.
• Modern design of external elements.

Among the disadvantages, frequent breakdowns of the plug retainer are noted, so you need to choose high-quality products from well-known manufacturers. Another disadvantage of the automatic design is the small diameter of the drain slot, so the water flows out quite slowly.

The installation technology for an automatic model is completely similar to the installation of a semi-automatic model. The only difference is that the cover on the overflow performs only decorative functions.

Note! To clean a clogged drain hole, just unscrew the button plug: it is attached to a screw rod.

The most common failure of an auto drain is failure of the spring and plug retainer. In this case, a new mechanism from the same manufacturer is purchased and a replacement is made.

What are they made of?

Drain and overflow systems are made from the following materials.

Plastic

Plumbing plastic is the cheapest material from which budget models are made. Plastic is not subject to corrosion, so the products have a long service life. But siphons and other plastic components do not have a very attractive appearance, so when carrying out modern renovations, plastic is most often used for hidden installation, for example, when the bathtub is covered with a screen.

Metal

Premium class overflow sinks are made of copper. Such drain sets have an attractive and sometimes original design, although this does not matter for hidden installation. Copper, brass and bronze are used to make drainage systems. Sometimes one drain and overflow system is made of different metals. For example, a siphon and pipes are made of brass, and tubes are made of bronze or copper.

In addition to their solid appearance, products made of non-ferrous metals have increased wear resistance and mechanical strength. But this does not give them any advantage over high-quality plastic products, since most likely you will make repairs much earlier than the plastic drain crumbles over time.

Popular manufacturers

In conclusion, we will look at 10 manufacturers of bathtub drain sets, as well as examples of their products.

HANSGROHE. A German brand that produces drainage systems for a variety of plumbing equipment. The company offers automatic and semi-automatic systems made of high-quality sanitary plastic. External elements are covered with a reliable polymer coating that imitates stainless steel. In addition to ready-made kits, HANSGROHE produces components that are used for repairs in the event of damage or failure of some components.

KAISER. Another German company that supplies its systems for piping bathtubs to Russia. The company manufactures automatic and semi-automatic systems from non-ferrous metals. Despite the relatively low price, the products are of high quality and reliability.

VIEGA. The company produces piping systems made of polypropylene of a classic design, as well as with click-clack drain valves. External linings and grilles are made of stainless steel.

GEBERIT. This Swiss company supplies drain sets with a push and turn control mechanism to the Russian market. A distinctive feature of the product is the special hydrodynamic shape of the siphons and pipes, which accelerates the flow of water.

ALCAPLAST. Czech manufacturer of waste and overflow kits. It makes its products from plastic, the external elements are coated with chrome. Traditional, semi- and automatic systems are supplied to the Russian market.

RAVAK. A Czech company that produces plastic waste kits with semi-automatic control and a ClickClack type plug.

Ideal Standard. A German company that produces complete collections for furnishing bathrooms. Some bathtubs come with plastic automatic drain systems equipped with chrome-plated lids.

JACOB DELAFON. French plumbing is very popular in Russia. Plastic overflow drains with chrome grilles and a pressure plug are most often supplied with bathtubs.

Wasser Kraft. A German company that produces various plumbing fixtures, including drainage kits. A distinctive feature of the product is that it is made of black plastic, which gives the product an original look.

Triton is a Russian manufacturer of sanitary ware, including semi-automatic systems for bathtubs. Domestic products are low in price, have high quality, are made of plastic, and the outer grilles are chrome-plated.

To decide which device model is suitable in a particular case, you first need to understand the operating features and consider various modifications of the equipment. Thus, choosing from a range of manufacturers will not be a challenge for you. The right approach will allow you to find the answer to the question: “Which bathroom drain and overflow is best?”

1. Operating principle

The piping (or drain-overflow) organizes the drainage of water from the bathroom tank into the sewer pipe. The device consists of several hoses and tubes that are connected to each other, with a sewer system and two bath openings. The top hole of the tank prevents water from overflowing, the bottom hole is responsible for draining.

If all components are installed correctly, the likelihood of overflowing the bathtub is reduced to a minimum, but there must be moderation in everything. Sometimes water fills the bowl faster than it drains, in which case you can flood the floor in the room.

2. Types and differences of devices

2.1 Standard version

Model complete set:

• Pipe (siphon). Serves as a barrier against unwanted odors entering the apartment;
• Overflow neck;
• Drain neck;
• A tube connecting the siphon to the sewer system;
• A corrugated hose that allows water to flow into a siphon.

This device is considered traditional. To fill the bathtub, close the bottom hole with a stopper.

During operation, you need to monitor the condition of the seals and replace them in a timely manner.

Price range for standard models: from 10 to 25 $.

2.2 Semi-automatic drain and overflow

This system is more advanced than the traditional one. The drain and overflow consists of tubes and hoses that drain water, a siphon, and necks, but there are differences. The semi-automatic machine is supplemented with the following elements:

• Valve plug;
• A special cable that is responsible for controlling the plug;
• The mechanism by which the plug is lowered and raised. This function can be performed by a rotary ring, a button, a valve, or a handle.

The mechanism of action is quite simple: when the cable is tensioned, the valve rises, and due to loosening, it lowers. In order for the cable to move, you need to turn the valve or press a special button. In the semi-automatic device, the overflow hole is hidden behind the control unit. The advantages of the drain and overflow also include the design and ease of use of the structure.

The disadvantage of a semi-automatic system is the degree of reliability. It is better to purchase an expensive modification, or opt for a standard model.

Prices for semi-automatic devices: from 20 to 55 $.

2.3 Automatic option

A distinctive feature of this mechanism is the valve, the action of which is automated. In order for the plug to close the drain hole in the bowl, you need to press on it. The spring compresses and lowers the valve; due to the latch, the position is maintained. In order to drain the water you need to press the button.
Advantages:

• The drain can be controlled with your feet;
• Compact size of the visible part;
• Large assortment of buttons. Chrome elements are suitable for high-tech style; brass buttons will perfectly complement the vintage design.

Automatic drainage is often found in baby bath models. This device simplifies operation; the tank does not need to be turned over to remove water.

The disadvantage of this bathroom waste and overflow option is that it is difficult to replace the button. If the valve breaks, you have to purchase a new system. That is why experts recommend purchasing the most reliable automation.

Prices range on average from $60 to $280.

3. Types and features of materials

The main condition when choosing a material is corrosion resistance. These options include:

• Ferrous metal is a reliable material. The main drawback is the appearance of the device. Currently, they are trying to choose more modern options;
• Plastic for plumbing fixtures (polypropylene). White color, laconic shape, long service life. Polypropylene is inferior to metal in terms of strength, so there is a risk of product breakage. A simple drain and overflow design may be inappropriate if the decoration of the room involves the use of expensive materials and equipment;

• Bronze, brass or copper. Often these non-ferrous metals are not used without a protective layer. Parts located in the visible area can be coated with nickel or chromium (using the electroplating method). The use of nickel is preferable; this material is characterized by long-term operation. The visual difference of nickel is the blue tint of the parts;

In order to determine the type of metal, you should pay attention to the holes in the top and bottom of the bath. The color of copper is red; the strength characteristics of copper are inferior to other materials. Brass is stronger than copper and has a light yellow tint. The bronze base is the most durable in this category, comparable in stability to ferrous metal. Bronze is characterized by a dark brown tone; the main components of the alloy are zinc and copper.
Non-ferrous metals are an excellent option for the production of plumbing fixtures. Due to the resistance to corrosion, the parts are easily connected by thread.

Be careful not to damage the protective coating of the base. Even a small scratch will cause the destruction of the entire layer in the shortest possible time. The reason for this effect is a chemical process between metals.

4. Installation

You can install the drain and overflow yourself, but it is important not to forget that the tightness of the bathtub in the future depends on the quality of the work. However, despite all the responsibility, installation of the system can be carried out by a non-professional; you just need to listen to the advice of specialists.

• Follow a certain sequence in your work;
• Use special sealants to process connections;
• When tightening parts, be careful not to strip the threads;
• All elements must be tightened one quarter of a full turn after hand tightening;
• If you cannot tighten the connection, you need to check whether the nut is level.

Installation begins after the bowl is secured to the support. The bathtub must be leveled and fixed. It is also necessary to leave a height gap between the floor and the tank (from 150 mm or more).

Correct sequence:

• The bottom hole of the bathtub is connected to a tee. In this case, you need to process the connection using a sealant and secure the elements with a screw;
• Next, attach the siphon and secure it with the tee outlet with a nut. A rubber cuff can be used as a seal here;
• The overflow neck is connected to a side curved tube (siphon);
• The process is completed by connecting the siphon to the sewer pipe. For this purpose, a special spout pipe is used;
• During each connection, you should remember to lay the seal.

After installation is complete, you need to check the bathtub for leaks. The bowl is filled with water, then you need to carefully examine all the joints and connections. If drops appear on the surface, tighten the elements more tightly and re-treat with sealant.

Siphon installation video:

There are no strict rules for operating the drain and overflow. Let's look at some tips for caring for this system:

• For automatic and semi-automatic devices, it is necessary to periodically process the parts to maintain the shine of the metal. Such care is carried out using glass cleaners or special products;
• Carry out regular inspections to identify possible leaks;
• If the seal is broken, you can replace the sealing material, or tighten the junction of the elements additionally;
• Siphon clogging is considered one of the most common problems in the operation of this system. Cleaning is carried out with a small brush attached to a wire or using a plunger;
• An alternative to mechanical cleaning is chemical treatment using special means. The alkali in such products helps neutralize the blockage due to its splitting effect;
• These measures can be applied not only to the problem of blockage. The best way to prevent such a problem is to periodically prevent the system.