The final stage of assembling the drainage system is the installation of a siphon. When doing this work, you need to equip yourself with certain tools and knowledge.

Information about the structure of various types of drains and the features of their installation will be useful when preparing for work. Installing a drainage system in the kitchen is a simple job that even a non-professional in plumbing can handle.

Types and structure of the drainage device

A siphon is a plastic (less often metal) plumbing structure that traps and then discharges water and debris through pipes into the drain. For the kitchen sink, bottle and knee models are used. These are prefabricated structures that can be installed without the use of additional tools.

The easiest to use is the knee design. Such a system is easy to install, disassemble, change parts, and clean. The pipe in it is bent in the form of the English letters U or S, which saves space under the sink.

A device with a corrugated hose can take different positions. This allows you to install the siphon almost anywhere. Its installation can be carried out even by an untrained person. The only drawback of a system with a corrugated drain is the quick clogging of the hose.

Standard structure

The most common and inexpensive option for a drainage device is plastic. The standard kit includes the following items:

• body in the form of a bottle or knee;
• discharge to the sewer - located on the side of the bottle;
• collapsible glass with lid. This is a moving part that is used to clean the drain;
• large silicone or rubber gasket - a part that allows you to tightly connect the lid and body;
• plastic sewer outlet (pipe). Often can be supplied in the form of a pipe, smooth or corrugated. Completed according to the model and diameter of the outlet;
• outlet pipe with additional outlet. Designed to connect washing machines and dishwashers;
• metal mesh - installed in the sink drain hole. Prevents food waste from entering the drain;
• silicone or rubber gasket - installed between the sink drain hole and the pipe;
• plastic union (coupling) nut.

The factory package includes detailed instructions for manual assembly of the device with a simple diagram that is understandable not only to specialists. Installation of the drain system must be done manually to control the level of tension and clamping of the fastener. This will prevent damage to the plastic parts.

Installing a bottle siphon

A bottle model is suitable for connecting a kitchen sink to the drainage system. If space does not allow, an S- or U-shaped knee device can be used. These types are mainly used in the bathroom.

When choosing a kitchen drain, they are guided by the amount of free space under the sink, the quality and reliability of the model. Ease of replacing parts and cleaning is also an important factor in choosing a device.

The assembly of the kitchen sink siphon begins at the final stage of construction. By this time, the sewerage and drainage systems are already in working order, and the kitchen furniture is in place.

Install the bottle siphon in the following sequence. The first step is to unpack the kit and check that all parts are included. The body and tubes must be smooth, without chips or cracks. The corrugation should expand and fold freely. Check the presence and quality of all gaskets.

From the gaskets, choose a large flat rubber band that fits the diameter of the threaded connection of the glass, and put a seal on it. The lid is screwed onto the bottom of the glass until the seal is hidden.

Connection procedure

Connect the upper hole of the siphon with the pipe going to the sink by putting a union nut on it. Install the conical lining so that the wide part is directed towards the drain pipe. The union nut is tightened carefully, without pinching, but at the same time tightly so that water does not leak.

To attach the corrugation, place a nut with a gasket on it and on the side pipe and tighten it. It is worth noting that instead of a corrugated pipe there can be a rigid one, but this does not change the essence of the matter.

The largest diameter gasket is located between the top pipe and the sink. Another gasket and a metal part of the drain in the form of a lattice are screwed on top. A long screw is used as fastening.

The siphon should now be attached under the sink. To do this, the upper pipe is directed into the drain hole, and the corrugated pipe is connected to the sewer. A metal grate with a seal is inserted into the sink drain and secured with a screw. If the bottle part is not connected to the neck, it is screwed to the drain hole at the bottom. If the siphon has been assembled, secure it with a screw.

Then the neck and bottle part are connected, with a sealant placed between them. Finally, all union nuts must be tightened to ensure the structure is watertight. For reliability, the joints can be treated with sealant.

This is how a siphon for a kitchen sink is assembled. In case of repair, disassembly is carried out in the reverse order.

Overflow connection

The overflow is a special hole on the wall of the sink, to which a corrugated pipe is connected from the wall side. This design allows you to protect the kitchen from flooding if the drain hole is clogged. From the outside it can be covered with a decorative grille. In cheaper models of sinks it looks like several small holes; in a double sink it is located on the partition between the parts of the sink.

To install the overflow, take an additional, usually thinner, corrugated tube and fix it on the sink, opposite the overflow hole. The second end is inserted into the siphon pipe. The corrugation is attached to the sink with a bolt, and to the pipe - with a union nut. When installing, use a seal that is fixed under the socket attached to the back of the sink.

After installing the system, it is necessary to check its tightness. To do this, close the drain hole with a stopper and draw water into the sink. The liquid should all flow out through the overflow hole. There should be no leaks if the system is installed correctly.

Double sink

In the case of a double sink, you can install two siphons or choose a special design. The second option is preferable as it takes up less space. Special siphons for two sinks are made in such a way that pipes extend from the drain holes of the bowls, connecting in one common structure. Their disadvantage is that if there is a blockage in the kitchen, two sinks will be inoperative. The installation is very similar to the installation of a conventional siphon, only the number of parts increases.

Connecting a rigid drain pipe

The connecting element between the siphon and the drain system is a corrugation.

Experts recommend using a short plastic pipe - this way the likelihood of blockages will be reduced to zero. One of the advantages of a corrugated pipe is the ability to connect it anywhere. If necessary, it can be stretched to the desired size. But over time, the corrugation forms bends from sagging, which cause blockages in the pipes. If space allows, it is better to use a rigid pipe of the required diameter to connect the drain to the sewer.

To connect the siphon and sewer system using such a plastic pipe, do the following:

1. Select a pipe of the required diameter (usually d = 40) and length.
2. Check the length (if it is too long, you can cut it with a hacksaw).
3. A seal is put on one end of it and connected to the siphon using a union nut. A 500/40 adapter is put on the other end.
4. The wide part of the adapter coupling is connected to the socket of the sewer system.

Special seals are used to connect structural elements. After the system is ready, you can connect the water and check the result of the work. There should be no leaks at the connection points.

Over time, the drainage system wears out and one of its elements needs to be replaced. Repairing an old siphon or assembling a new one is not difficult; the main thing is to follow the instructions developed by the product manufacturer. To install the drain system, you may need additional elements: elbows, couplings, adapters, seals. All work is carried out independently.

Replacing a leaky siphon or installing a new one can be done without the help of a plumber. More complex plumbing work should be carried out by qualified specialists.

Frequent blockages, slow drainage of water, leaks and the penetration of sewer odors into the room - all this indicates that the kitchen sink needs urgent help. In most cases, such problems are caused by poor installation or broken siphon. To replace it, it is not at all necessary to call specialized specialists from the utility service, since you can install a siphon in the kitchen yourself.

Types of siphons and selection rules

The functional purpose of siphons is, first of all, to protect against the penetration of unpleasant odors into the room from the intra-house sewer system. Despite the apparent variety of models, the operating principle of the devices is almost the same. When used water is drained from various sanitary fixtures, part of it remains inside the siphon, forming a water plug that prevents the occurrence of extraneous odors and noise when using the sewer system. Similar products are presented in the following types:

• flexible corrugated S-shaped hose;
• U-shaped pipe structure;
• bottle-shaped element.

The main disadvantage of the design of the first two types of siphons is the lack of inspection, which greatly complicates the implementation of preventive maintenance during their maintenance during operation. Such siphons are most often used for washbasins in toilets and bathrooms. For kitchen sinks, it is considered more practical to use bottle-shaped products. Their collapsible body allows you to periodically clean the hydraulic seal container from accumulated food debris and fatty deposits on the walls of the siphon.

The determining criterion in choosing one type of bottle siphon or another is, first of all, the design of the sink itself. It may have an additional drain hole in the upper part of the side wall, which serves to prevent water from overflowing over the edge when the container is filled to the maximum. In this case, you should pay attention to siphons with an additional overflow pipe.

For double sinks, the connection to the sewer system may include one common or two separate siphons for each tank. Such designs are distinguished by somewhat complicated communication wiring.

Installing a siphon in the kitchen makes it possible to connect a nearby dishwasher or washing machine to its drain pipe. This additional option greatly simplifies the process of connecting household appliances to the sewer system, so when choosing a suitable product, this point should also not be overlooked.

When selecting a siphon, the diameter of its drain pipe is of no small importance. The maximum possible hole size for a particular kitchen sink model will ensure faster drainage of recycled water and prevent frequent blockages.

Main components and components

Bottle siphons produced today have a fairly standard appearance and are a structure consisting of several main components.

1. Protective metal mesh with decorative nickel-plating.
2. Overflow pipe.
3. Additional outlet for connecting a dishwasher or washing machine.
4. Siphon body.
5. Outlet pipe for connection to the sewer system.
6. Silicone gasket that ensures the tightness of the threaded connection of the collapsible siphon body.
7. Union nuts.

In addition, the product includes flexible corrugated hoses, gaskets for union nuts and several metal screws for fastening.

The vast majority of such products are made from plastic. Therefore, before changing the siphon in the kitchen, you should make sure that all its components are intact. First of all, the body of the product should not have hidden cracks. This can be easily checked by pouring some water into its container. Also, attention should be paid to the notch of the thread of plastic parts, its relief, the absence of visible dents and burrs.

Installing or replacing a siphon in the kitchen requires the presence of some additional materials and tools necessary for the work. In most cases, they are always at hand for the home craftsman:

• screwdriver;
• pliers;
• insulating tape made of polymer material;
• silicone sealant.

Despite the almost complete lack of water pressure in the kitchen sink drain system, many experts, however, strongly advise using a waterproof sealant specifically designed for plumbing work. The composition must be used to treat all threaded connections of the product, as well as installed gaskets.

The use of sealant is a prerequisite for high-quality assembly of the siphon!

Assembly must be carried out in strict accordance and in a strictly specified order, determined by the attached instructions. In this case, you must adhere to the following recommendations:

• It is advisable to disassemble the assembled product to ensure that all parts and gaskets are present;
• there should be no dirt or burrs on the elements being connected that would prevent them from fitting tightly;
• When screwing the bottom cover of the siphon, you should not use excessive force, as this can easily break the thread or push through the included gasket.

To check the quality of the siphon assembly for leaks, you need to pour a small amount of water into it. If there are no smudges on the bottom cover, you can safely begin installing it.

Installation of the assembled siphon

In cases of replacing a previously installed product, its preliminary dismantling will be required. Before disassembling the siphon in the kitchen, you need to place some kind of container under the sink to drain the remaining water. Then, using a screwdriver, unscrew the fastening screw that holds the drain decorative grille at the bottom of the sink. After disconnecting the outlet from the sewer, the siphon can be finally removed.

To install a new appliance, the previous seat of the kitchen sink must be thoroughly cleaned of dirt and grease deposits. You will also need to check the condition of the rubber sealing coupling on the outlet pipe of the sewer system, which, however, is recommended to be replaced with a new coupling. At the same time, preventative cleaning of the sewer bed itself will not be superfluous.

Installation of the assembled siphon is carried out in the following sequence:

• an outlet pipe is inserted into the drain hole of the sink, with a pre-installed rubber gasket, onto which a decorative grille is attached with a screw;
• from below, the outlet is tightly attached to the sink using a union nut;
• the assembled siphon is placed on the end of the pipe, after which the elements are connected into a single structure using a second union nut;
• if there is an overflow hole in the sink, it is connected to the corresponding outlet of the drain pipe using the supplied flexible hose;
• A corrugated outlet hose leading to the kitchen sewer system is connected to the outlet of the siphon, located on the side wall of the housing. To do this, use another union nut;
• at the final stage, a connection is made to the sewer pipe using a transition sealing coupling, since the mating parts have different diameters.

Upon completion of installation, perform an initial check of the assembled structure by filling the kitchen sink with water.

If the siphon has additional outlets for connecting household appliances, they must first be closed with special plugs!

If there are no leaks, proceed to connecting the drain hoses of the washing machine or dishwasher, after which the installation of the siphon can be considered complete.

The operation of a gravity sewer requires compliance with certain rules. When wondering how to properly install a siphon in the kitchen, you should take into account some nuances that are well known to professionals:

• a flexible drain hose leading from the siphon to the sewer pipe is installed to the minimum possible length, without unnecessary bends;
• the slope of a sewer bed with a diameter of 50 mm can be at least 0.03, that is, 30 mm for each linear meter of pipe, which will ensure normal water flow in the system;
• When connecting drain hoses from household appliances to the siphon, they must be additionally secured to the corresponding pipes with clamps. This precaution will prevent unexpected breakdown of the hose as a result of an increase in pressure created in the drainage system of operating equipment.

In conclusion, it remains to add that proper care and regular preventive cleaning of the siphon from accumulated contaminants will significantly extend its service life and eliminate discomfort when using the kitchen sink.

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Replacing a siphon in the kitchen with your own hands

Getting to know the equipment for a water seal in a kitchen sink

The kitchen sink siphon serves to ensure that leftover food, vegetable peelings, and foreign objects (a ring, for example) that are periodically in the sink do not fall directly into the sewer pipe. In addition, this plumbing fixture saves water from overflowing and serves as a water seal that prevents sewer gases from entering the room. It bears a constant and rather large load, leading to a violation of integrity.

The purpose of the siphon is to prevent food debris, vegetable peelings and other foreign objects from entering the sewer system.

Therefore, it is quite possible that there will be a need to change the siphon in the kitchen. This is a fairly simple procedure, and even an untrained person can carry it out.

The first thing to do is to carefully examine the siphon model in order to replace the damaged device with a similar one.

Modern siphons are made of brass or plastic. The most common devices are made of polypropylene or polyethylene, which do not rot or rust. The pipes of the device usually fit any hole and are adjustable in length.

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Types of siphons for washing

Types of siphons: corrugated, bottle and pipe.

If twenty years ago the kitchen was equipped with one sink. Today the situation has changed radically. Compact washing machines and dishwashers are installed in the kitchens.

The designs of plumbing equipment are also changing. For example, for double sinks, which are installed for washing dishes and vegetables, double siphons were invented. The plumbing market offers devices that provide overflow and automatic opening of the drain plug.

Popular simple single devices, depending on the design and materials, are divided into three groups.

The simplest, most accessible, and giving the least amount of leaks (due to the small number of connections) is a corrugated siphon. It is a plastic pipe that is bent in a zigzag to form a water seal. The bend is secured with a plastic clamp. The material and simple design allow it to maintain mobility and plasticity. Due to the properties of the corrugation, it is easy to stretch and the sink can be easily moved to another location. The downside is that the corrugated surface of the pipe easily becomes clogged with grease.

Pipe siphon (knee siphon) is a traditional rigid structure in the form of a curved metal pipe that occupies a large space. Another drawback is that it can only be cleaned from large debris.

A bottle siphon is most often installed under the sink sink. The flask is separated from the sump by an outlet pipe (usually corrugated).

If you purchased a siphon with holes for the future installation of additional plumbing fixtures, for example, a washing machine, they can be temporarily closed with plugs with tight gaskets.

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Preparatory work for replacing the siphon in the kitchen

The success of installing a siphon between the sink and the drain into the sewer system depends on the quality of the plumbing equipment and correct assembly.

The siphon also serves as a water lock, which prevents sewer vapors from entering the apartment.

Therefore, before purchasing a device, you need to get acquainted with its structure.

For example, a plastic bottle siphon consists of a body, an outlet, a socket with elbow insulation, and a sewer pipe. Sealing is achieved through gaskets placed between the parts. You must inspect them carefully when purchasing. Detected damage may be due to the fact that the product is stored and transported in plastic packaging. This can cause scratches on polished items, as well as chips. Factory defects can be associated both with deformation of rubber parts and with poor-quality threads, leading to the appearance of sharp burrs.

You should unwind the purchased device and arrange the parts in the order and position in which you plan to connect them according to the instructions.

To dismantle and assemble the system, some materials are required:

• transition cuff;
• silicone sealant gasket;
• insulating tape (FUM).

Depending on the type of device, the following tools are used:

• flat screwdriver;
• adjustable wrench;
• pliers used for nuts.

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Sequence of dismantling the siphon in the kitchen

Before disassembling the plumbing unit, you need to spread a rag under the sink and place a bucket on it.

First of all, you should turn off the water supply in the apartment or kitchen.

Before replacing plumbing fixtures, you should place a cloth under the sink and place a bucket on it to collect dirty water.

The old system can be disassembled using a flathead screwdriver. The first step is to remove the screen to release the screw connecting the outlet pipe to the outlet. Then the screw is unscrewed with a flat-head screwdriver. The body of the device is supported from below to prevent it from falling to the floor.

After this, the corrugation or pipe is removed from the sewer pipe, and the old siphon is separated from the system.

After this, order is restored. The socket and drain are thoroughly cleaned of old sealant and dirt. The inner surface of the pipe is cleaned with abrasive sandpaper and wiped with a rag. It is advisable to let it dry. Then, a rubber sealing ring with the outer surface lubricated with silicone sealant must be inserted into the pipe socket to its entire depth. After this, the pipe is temporarily closed with a rag or stopper. Wipe the sink with a damp cloth.

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Standard equipment for bottle siphon

In the kitchen, a similar design is most often installed due to the ease of installation and maintenance during operation. The kit of parts from which you can assemble a bottle siphon includes:

• plastic housing of the device;
• outlet pipe made of plastic, equipped with a pressed threaded insert made of stainless steel;
• plastic nuts (diameter 32 mm);
• rubber gasket of the exhaust pipe;
• conical rubber cuffs (diameter 32 mm);
• soft plastic cuff;
• the lower plug of the device and the ring gasket for it;
• clamping screw;
• rubber stopper;
• decorative cover for the sink drain hole;
• The set may include a decorative chain with rings.

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How to assemble a bottle siphon in the kitchen

Bottle siphon design: 1. Water outlet 2. Water overflow 3. Special outlet for additional connection of a drain pipe from a dishwasher or washing machine 4. Flask 5. Outlet pipe 6. Gasket 7. Connecting screws and nuts.

The assembly procedure is usually described in the instructions included with the parts kit.

The process can be divided into three stages:

• attaching parts to the sink;
• installation of the siphon body;
• connecting the device to the sewer.

First of all, you should carefully inspect the lower joining surface. If burrs or sharp particles are found on the threaded surface that could damage the O-ring, remove them with a sharp knife. A gasket coated with sealant is inserted into the groove of the sump (lower plug) to achieve a tight seal. After this, the sump is screwed onto the bottom of the siphon.

A plastic coupling nut and a cone gasket (most often blue) are put on the outlet (outlet) pipe alternately. In this case, the gasket is secured, retreating 3-5 centimeters from the edge of the pipe.

Instead of a cone gasket, a rubber cuff is sometimes used, which may be included in the kit. It is used when there is a difference in the diameters of the siphon outlet and the sewer pipe. For example, a cuff marked 40/32 mm allows you to connect a pipe having a diameter of 32 mm and a device outlet with a diameter of 40 mm.

The prepared pipe is inserted into the body of the flask so that it does not go all the way, otherwise the water will remain in the sink. The strength of the connection is achieved by tightening the coupling nut by hand. After this, the structure will take the shape of a bottle. It is not recommended to use tools to avoid overtightening the nut, otherwise it may burst.

To achieve tightness of the sink siphons, the threads and gaskets must be lubricated with a sealant that protects against leakage.

We think about such a simple but extremely important drainage element as a siphon only occasionally when we look under the sink or in case of a clogged sewer. ? Siphons are installed under sinks in bathrooms and kitchens. At the same time, in the kitchen, a siphon can combine two sinks and a dishwasher at once, and in the bathroom - a washbasin and a washing machine. The purpose of this device is to prevent the spread of sewer odors in the room and facilitate the process of clearing blockages.

Siphon. Varieties and features

To choose a siphon for a sink (costs about 120-200 rubles), and then install it correctly, it is worth considering its possible design features and purpose.

1. Pipe siphons They are a pipe bent in the shape of the letter S (or U) connected between the sink and the sewer pipe, in the lower part of which waste accumulates. Cleaning is done after disconnecting the tube and disposing of its contents, followed by washing.
   A significant drawback of the pipe siphon is the small water seal, which can evaporate if you do not use the sink for several days, then the unpleasant smell of sewage will penetrate into the room.

• externally similar to a pipe one, but made of a flexible corrugated plastic tube with a connecting unit.
  Despite the fact that, thanks to its plasticity, a corrugated siphon can be connected to any sink, operating conditions do not allow the presence of boiling water or concentrated chemicals in the tube. Corrugated siphons are not suitable for installation in unheated rooms.

  

• Bottle siphon looks like a vessel (cone-shaped or cylindrical) made of plastic, cast iron, steel, brass or other material. In the upper part and on the side wall there are holes for connecting pipes, and the bottom of the siphon is collapsible (threaded connection). By unscrewing the bottom, you can clear the siphon cavity from blockages.
  There are models of bottle siphons, supplemented with a corrugated pipe for ease of connection with the sewer pipe.

  

• Branched siphons allow you to connect several supply pipes from sinks and household appliances at once. Structurally they resemble bottle ones, but with a slightly more complex design.

  

• Concealed siphons. The most expensive model available. Ideal for installation under sinks mounted on open shelves or wall-mounted. The siphon design is hidden in a small niche behind a decorative screen.
• Siphons for bathtubs or sinks with corrugated pipes for connecting the top drain hole (overflow).

  

Siphon details

Let's consider a generalized set of siphons. When purchasing the kit you should see the following parts:

• outlet pipe(spout) with threaded metal insert And gasket made of rubber;
• fastening nuts made of plastic with a diameter of 32, 40 or 50 mm, respectively;
• cone-shaped cuff made of rubber (diameter 50, 40 or 32 mm);
• installation cuff with soft skirt with a diameter corresponding to the diameter of the pipe;
• clamping screw(optimally made of stainless steel) and filter pad for drainage (also made of stainless steel) with gasket(silicon plastic or oil-heat-resistant rubber);
• siphon body(one of the types listed above, for example, bottle);
• cover drain plug made of rubber.

The bottle siphon must additionally contain ring gasket made of rubber.

Preparation for dismantling and installing a siphon for a sink/washbasin

The entire preparation process consists of preparing (purchasing) the following materials/tools:

• siphon (check its integrity before installation by disassembling and inspecting each part, paying special attention to threaded connections);
• sealant (based on silicone or natural rubber, odorless or with a subtle aroma, which indicates the suitability of the sealant for work with plumbing);
• electrical tape;
• a regular small screwdriver;
• adjustable wrench;
• plastic bag, rag;
• buckets or basins.

If you plan to dismantle an old cast iron siphon, a hammer, chisel, and chisel will come in handy.

Note! Standard sizes of sewer pipes are 32, 40, 50 mm. If you are in doubt about the choice, purchase siphons with a stepped spout end. All you have to do is try it on and, if necessary, cut off the extra steps of the part and purchase a seal. If you purchased a siphon of the wrong size, a rubber adapter will correct the situation.

Dismantling the old siphon

To install a new siphon, you will have to dismantle the old one.

1. We turn off the main water supply valve in the apartment.
2. We place a basin or bucket under the old siphon. The liquid remaining inside the siphon will drain into it.

   

3. Take a screwdriver and unscrew the fixing bolt from the sink drain filter (counterclockwise).

   

4. Using your hands or an adjustable wrench, unscrew all the parts of the old siphon. We remove the siphon and plug the sewer pipe with the bag.

   

   



5. We take out the drain filter and wipe the inside surface of the sink with a rag. Now you can install a new siphon.

   

Note! Before installing a new siphon, it is recommended to clean the inner surface of the sewer pipe from plaque. This will prevent blockages from forming in the system.

To dismantle the cast iron siphon, you will have to split it with a hammer and chisel. This is quite painstaking and dangerous work. Make sure that the fragments do not injure you or penetrate into the sewer pipe. Remove all traces of old cement.

How to assemble a bottle siphon

1. We put a ring gasket (usually made of blue rubber) onto the threaded connection of the upper collapsible part of the bottle siphon.
2. We screw the lower part (bottom) of the siphon (threaded connection).
3. We take the spout tube and put two plastic tightening nuts and a suitable ring gasket on it.
4. We insert the spout tube into the upper hole of the siphon body. Tighten the plastic nut (but not too much).
5. Take a corrugated hose. We put a nut and gasket on it. We insert the hose into the side hole of the siphon body. Tighten the nut.
6. We put a gasket on the upper hole of the spout tube and screw in the drain with a nut.

Step 1. We check the compatibility of the filter grid (it is recommended to purchase a stainless steel filter grid for the sink/sink) with the drain hole of the washbasin. If the size of the grate exceeds the diameter of the stamped recess of the sink, it is recommended that installation be carried out using sealant (without gasket). But it is much better to replace the part in the store with one that fits in size.

If the size matches, install the grille on the gasket, lubricating the surface with a small layer of sealant.

We insert the fastening bolt into the filter grid, place the connecting pipe with the gasket under the drain hole, align it and screw it to the drain hole with the fastening bolt.

Step 2.

Step 3. We check the threads at the ends of the siphon body. Using a sharp knife, remove all burrs that could damage the gaskets.

Step 4. We insert the outlet end of the outlet pipe from the siphon into the cuff installed in the sewer pipe. If necessary, you can install a clamp.

Step 5. We assemble the siphon (the assembly technology is described above) and use plastic fastening nuts to screw it to the connecting pipe under the drain hole.

Screw the siphon to the connecting pipe under the drain hole

If the siphon is corrugated, at this stage we install the retainer. We connect the outlet pipe to the outlet of the siphon and attach it to the installation collar in the sewer pipe.

We connect the outlet pipe to the outlet of the siphon

Step 6. Turn on the water and check the tightness of the structure.

If you are installing a siphon for a double sink, then under each drain hole of the sink you should screw a drain pipe and connect it to the siphon.

Branched siphons, to which washing machines/dishwashers are connected, are mounted in the same way, only flexible hoses from household appliances are screwed to the siphon outlets with nuts.

Concealed siphons are installed in a special niche under the sink. The siphon is connected to the sink and sewer pipe, and the outer part is hidden behind a decorative plate-plate.

Sink siphon prices

sink siphon

Video - Assembling a siphon for a sink

Video - How to install a siphon for a sink

Any self-respecting man, or even your teenage son, will be able to understand how to assemble a sink siphon on your own. After all, this requires only a minimum of effort, a few simple skills, one screwdriver and maximum desire.

What every housewife knows about this device is that it can become clogged and need to be cleaned, or it can leak and then may need to be replaced with a new one. If there is a man in the house, there is no problem. Otherwise, you will have to turn to the paid services of a specialist.

Purpose of the siphon

Whether you live in a private house or in an apartment, if your home has a sink, washbasin, bathtub or shower, then there are siphons there. You can do without this plumbing device only in the case of an outdoor washbasin.

A siphon is a curved section of pipe through which waste water is drained from a sink/bathtub/shower tray into the sewer system. Connecting a sink to a sewer is impossible without this plumbing fixture. After all, it is what retains unpleasant odors coming from the sewer pipe and prevents the growth of bacteria thanks to the water seal that it forms.

It is also necessary to connect a siphon to the sewer to catch coarse debris that, for whatever reason, ends up in the drain. It is important to immediately note that the plumbing device in question is not capable of fully protecting the sewer system from clogging. It is necessary to periodically use additional chemicals intended for drain cleaning.

Types of siphons

Before we begin to analyze the question of how to properly connect a siphon to a sink or other plumbing fixture, we will dwell on what types of siphons exist. After all, having decided to purchase this product, you will first of all think about its variety, which is necessary specifically in your case. For greater clarity, consider the following images.

Types of siphons

As can be seen from the above pictures, the most functional and easy to install today is the bottle siphon. We will stop there.

Basic equipment of a bottle siphon

To answer the question of how to install a bottle siphon on a sink, you must first consider what parts it consists of. The main components of a bottle siphon for a sink or bath are:

• protective grille;
• set of rubber gaskets;
• conical rubber cuffs;
• inlet or outlet pipe;
• connecting screw;
• coupling nut;
• bottom;
• connecting nut for sewer pipe;
• drain pipe.

Various modifications of bottle siphons

Depending on your device model, it may have additional parts such as:

• several inlet pipes;
• overflow pipe;
• auto drain valve.

If you will have a washing machine next to the sink on which you are installing the siphon, you should consider purchasing a model with a special additional inlet pipe. It is much easier and more convenient to connect household appliances to the sewer through a siphon, rather than directly.

The overflow pipe is installed on a sink, the design of which initially includes an overflow hole. To avoid flooding in the kitchen, manufacturers of bathroom and kitchen sinks have recently begun to equip them with an overflow hole, and manufacturers of siphons have begun to equip their products with an overflow pipe.

Auto-draining is a very convenient feature of modern models. When there is a need to fill the sink with water, just simply press to close the valve on the drain. Then, when you no longer need the water in the sink, the valve opens and the drain continues as usual.

The image below shows one of the modifications of the bottle siphon. In general, they all have a similar device, but which modification of the siphon for the bathroom sink to choose is up to you to decide based on your specific conditions.

There are also models of siphons for double sinks. The convenience of this model is that you do not have to install the sink siphon twice. And this will significantly save your time and effort. But not only. The model with two inlet pipes is more compact, which is important for productive use of the space under the sink. By installing 2 separate siphons on a double-bowl sink, you create a web of pipes and hoses under the sink. This will not only prevent you from placing a trash can there, for example, but will also make the sewer unit difficult to maintain.

Assembly technology

Whatever model of the plumbing fixture in question you purchase, the manufacturer must attach to the product an assembly diagram and a list of components. It is the manufacturer’s instructions that should be followed first when assembling the sink siphon.

But, as a rule, the instructions are schematic. If this is not the first time you are assembling a product, it is quite possible that the diagram will be more than enough for you. However, it is especially important for a beginner to focus on the points, which we will now discuss in detail. And it is sometimes useful for the owner, who has long been accustomed to doing everything with his own hands, to be reminded of some of the nuances.

1. So, step one is checking the contents. It would seem that this is elementary. But there are often situations when “something is not right here” and it is not clear what needs to be connected to what, because a certain part is simply missing. Over-stuffing occurs less frequently. Then the puzzled owner will also spend a long time wondering what to attach the extra nut to.
2. When you have figured out the configuration and have not forgotten to also pay attention to the quality of the parts, you can proceed directly to assembly.
3. Check the bottom plug. Make sure that there are no sharp elements or defects on it that could damage the gasket. The bottom of the siphon is always filled with water and the presence of defects in this place of the structure will inevitably lead to leakage.
4. Install a grate to prevent food debris from falling into the drain and a white gasket over the hole in the bottom of the sink. And on the back side of the drain hole, from underneath, a black rubber gasket is installed. Press the outlet pipe to the sink and screw a fixing screw, the diameter of which is 6-8 mm, into a special socket in the pipe from above through the grille. To do this, you will need a wide screwdriver - perhaps the only tool you will use other than your hands.
5. Install a coupling nut on top of the outlet pipe, then a conical rubber gasket. Insert the siphon into the fitting to ensure that the height it is at is correct. Secure it at this level by hand tightening the coupling nut. The installation of the siphon on the sink is almost complete.
6. After this, you will need to place the rubber gasket in the bottom cover of the device and screw the latter. In the future, it will be necessary to unscrew it in order to clean everything from the debris that has accumulated there. Each time, be careful not to pinch the gasket.

What you should pay attention to during installation:

• When assembling the device, do not use sealant. When you need to take it apart to clean it when a jam occurs, you won't be able to do it quickly. On top of that, you will have to remove the remnants of the old sealant before sealing everything back up. As a last resort, use silicone, but it’s better to just get by with the rubber gaskets that are included in the kit. Provided that they are of normal quality, there should be no problems with the tightness of the joints. This is a sewer, there is no pressure there, unlike a water pipe.
• Think right away whether you will install a washing machine in the kitchen, bathroom or other room, whether you will install a dishwasher or not, whether your sink will be single or double. This is necessary so that you do not need to install the siphon on the sink again and again with the addition of new household appliances in your home that require connection to the sewer.
• To make sure that the siphon you assembled will function properly, you need to make sure that all connections are tight and that there are no leaks in any place.
• All connections must be made manually, without auxiliary tools. Otherwise, there is a risk of pinching the sealing rubber, which will significantly reduce its service life.

Summarize

Assembling a siphon for a sink, washbasin, shower cabin or bathtub does not take much time and does not require special skills. However, there are a number of nuances that you should be aware of and take into account so that you do not have to do double work by redoing something. You need to take everything into account so that you don’t soon need to replace a completely new device with a more functional model, because you forgot to take into account that you will place a washing machine nearby and it will also need to be connected to the sewer through a siphon.

If you are new to plumbing and are installing a siphon for the first time, the manufacturer’s instructions for the product may be incomprehensible in some ways. Having only a schematic description of the assembly and installation sequence of the device, it does not contain important information and tips that will help you avoid mistakes and protect your kitchen from sewer leaks.

Video instruction