How to choose and install a toilet siphon?

A bathroom is an integral part of any home, be it an apartment or a private house. Almost everyone is faced with the need to replace a siphon when repairing or buying a new one during construction. Often, sellers and buyers mistakenly consider a flexible corrugated pipe as a siphon, through which drains enter the sewer. Plumbers mean by the term "siphon" a hydraulic seal that prevents gases from entering the room from the sewer. We can say that all toilets are siphon. We will consider exactly the option, correctly called the toilet outlet.

Toilets can be classified according to different parameters, for example, by the type of water outlet from a floor-standing toilet.

• With horizontal outlet. They are located parallel to the floor at a height of 18 centimeters. A slight slope is not excluded, but only in the direction of increase as it flows down. This is the most common wiring scheme in Europe and the CIS.
• With vertical release. This option is located perpendicular to the floor. In this case, the sewer pipe must be strictly vertical. This wiring scheme is used mainly in the USA and Canada. In Russia, such a release is common in Stalinist-built houses, which have not yet reached the turn of major repairs.

• With oblique release. This option assumes the slope of the sewer pipe, to which the connection will pass, at an angle relative to the floor of 15-30 degrees. This is the most common option for Russia. It is very rare to find imported sanitary ware with such parameters.
• With the release of vario. It is also called universal. We can say that this is a type of horizontal outlet toilet, only with an important feature. It is much shorter, so all siphons (pipes) can be used. This is one of the most popular toilet flush variations.

A vertical outlet cannot be combined with a horizontal or oblique connection, in turn, for an oblique entrance, it is better to choose a toilet with a similar or universal outlet.

Nozzles can be divided into several types based on their design.

• Not bending. This is a hard siphon, used only in cases where the difference between the outlet of the toilet and the entrance to the sewer is no more than ten degrees. Such pipes are straight or curved. To select this option, you need to install the toilet at the intended installation site and measure the distance and angle of the toilet bowl outlet in relation to the sewer entrance.
• Non-bending with an offset eccentric. Thanks to him, you can connect a toilet and a sewer pipe with an input-output difference of up to two centimeters.

• Swivel. This type of siphon is suitable for toilets with an oblique outlet. They can rotate up to fifteen degrees. This is the most expensive version of the siphon.
• Corrugated pipes. The cheapest and most common option. It is considered universal. It can be used to connect the toilet and the sewer pipe at almost any angle. This option has a significant drawback: due to the corrugated surface, it can accumulate deposits. Plumbers advise using it only if it is impossible to install another version of the siphon.In the event of a breakdown, it cannot be repaired - only replaced.

All nozzles, without exception, have an elastic cuff that is put on the outlet of the toilet bowl. Its purpose is to ensure a tight connection between the siphon and the toilet. It also allows you to change the angle of the pipe in relation to the toilet by moving it.

Additional cuffs without siphons are available commercially and can be attached to existing ones. In this case, the angle of inclination of the entrance-exit will become larger.

There is another type of cuffs - they are used when the toilet outlet and sewer inlet openings are side by side in the same plane. In this case, you can do without a siphon at all.

There are two types of toilet siphons - plastic and cast iron. The latter almost fell out of use, they were ousted from the market by a cheaper and more functional analogue made of plastic.

Consider the process of installing a siphon using a corrugated example.

For this you will need:

• sealant;
• linen fabric;
• pipe branch.

The first step is to locate the toilet. It must be placed in the intended place of use and secured to the floor. The inside of the toilet outlet must be level and clean. If there are residues of cement, they must be carefully removed, avoiding damage to the socket, then it is necessary to wipe the surface with a dry cloth. The same actions must be carried out with the sewer entrance.

In the second step, the cuff is stretched and put on the release. The rubber seal returns to its original form, as soon as it is released. After that, you need to attach the corrugation to the entrance of the sewer pipe.

The third step is to seal the joints. The outlet from the toilet and the sewer inlet are treated with a sealant. This is done in order to eliminate leakage and prevent odors from the sewer from entering the room.

It may happen that the sewer pipe is not made of a modern polymer with a diameter of 11 centimeters, but is still Soviet, cast iron. This can be found in old Soviet-built houses. In order to install the siphon in a cast iron pipe, it will need to be wrapped with tarred fibrous material, for example, flax.

The last step is to adjust and adjust the water supply to the toilet cistern.

You can cope with the choice of a toilet siphon on your own, but if you are in doubt, do not neglect the help of consultants.

To find the best option, you need to know:

• the distance from the toilet bowl exit to the sewer entrance;
• outlet-inlet diameter;
• the location of the sewer inlet relative to the toilet outlet.

Pay particular attention to the thickness of the nozzle. The larger it is, the longer the siphon will last.

It is better to give preference to imported manufacturers from the Czech Republic, England and Italy. Despite the high price, replacement for such a pipe may be required only after 10-15 years.

Many people wonder how to flush the siphon with a blockage. For this case, you can buy a special tool in the store, but you should not use too aggressive chemicals, as they can destroy the plastic.

How to properly connect the toilet to the sewer, see below.