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How to connect a bath to the sewer with your own hands

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When carrying out repairs in the bathroom and replacing old plumbing with a new product, you must not only purchase it, but also connect the bath to the sewer with your own hands, installing it in the place intended for it. It is not difficult to perform such work, since it does not require special skills.

The home craftsman needs to know how to properly connect the bath to the sewer. To do this, he needs to follow the installation instructions and deal with the nuances of the repair.

Pipes for connecting the bath to the sewer

According to experts:
  • before connecting the bath to the sewer, you should buy a special siphon, which is equipped with devices that ensure the tight connection of plumbing directly to the drain;
  • installation of sewage in the bathroom using corrugated pipes (shown in the photo) is allowed only as a last resort, since such a connection cannot be called ideal for a number of reasons. The fact is that the folds on the pipes contribute to the accumulation of debris and it is almost impossible to clean them, and besides, during operation they contribute to an increase in hydraulic resistance;
  • the connection of the bath to the sewer is considered correct when the siphon outlet is mounted above the sewer pipe. The height difference should contribute to the rapid and unhindered removal of wastewater. Violation of the rules governing how to connect the bath to the sewer will cause the waste water to stagnate and blockage will appear;
  • The drainage system must be cleaned periodically. To provide access to the siphon, an inspection hatch is purchased and placed on a protective screen.
When a sewer is created in the bathroom, pipes for supplying it to plumbing are selected according to the following principles:
  • for mounting the system, preference should be given to rigid plastic pipes, even if you need to use knee elements;
  • if the sewer system in the bathroom has a complex design and it is problematic to dock with the siphon outlet, corrugation is used.

Pipes designed to connect the siphon to the sewer are made of hard or smooth flexible plastic (product diameter 40 millimeters). When the do-it-yourself sewerage in the bathroom is made using pipes of 50 mm diameter, you will need to use a 50/40 mm rubber adapter. If the sewer system in the bathroom is made of cast iron elements, then a 73/40 mm adapter will be required.

The procedure for connecting the bathroom to the sewer

The process of how to connect a bath to a sewer consists of several stages:
  1. First of all, they carefully study the instructions that manufacturers attach to their products, in this case, to the siphon. Assemble the product according to the manufacturer's recommendations. All enclosed gaskets must be placed in place.
  2. The plastic parts of the siphon (see photo) are assembled by hand. The use of gas and open-end wrenches is not allowed, since plastic threads must be handled with care (read also: "").
  3. After the siphon is assembled, the corresponding end of the product is placed in the sewer pipe, and its other end is connected to the drain hole of the plumbing fixture, not forgetting to use sealing gaskets. An overflow pipe is also connected to the bathroom.
  4. Do-it-yourself installation of sewerage in the bathroom is carried out in such a way that all joints are made airtight. Silicone is not able to replace special gaskets, they can only additionally process the junctions of individual elements.

How to connect a bathtub to the plumbing network with your own hands

When the problem of how to assemble the sewer in the bathroom is solved, and the plumbing is connected to the sewer system, they begin to check the tightness of the connections and the quality of the arrangement of the wastewater drain. To do this, plumbing fixtures are connected to the water supply network.

The connection process looks like this:
  1. On pipes supplying cold and hot water, a stopcock is mounted in front of the connecting fittings so that in the future it is possible to carry out repairs or change the mixer.
  2. Eccentrics are connected to the fittings. In order to ensure the tightness of the joints, tow with paint or fum tape is used. Eccentrics are needed for proper joining of pipes of the water supply network with connecting nuts.
  3. To hide the unpresentable appearance of eccentrics, decorative nozzles are used.
  4. Rubber gaskets are inserted into the connecting nuts, which will ensure the tightness of the pipeline (in this case, the fum tape is not used).
  5. Then the mixer is screwed, while both nuts must be tightened so that there is no distortion. Place a rag under the wrench so as not to scratch the chrome surface. Excessive force should be avoided.
  6. After the connection is completed, the system is checked for leaks by opening both taps and checking for leaks. Even after the water is turned off, it is necessary to continue to monitor the junctions of pipes with plumbing, since leaks may occur under pressure.
  7. If a leak is detected, the leaky assembly must be redone. The most common cause of a malfunction is an incorrectly laid or poor-quality gasket.
According to professionals, reinforced hoses should not be chosen for plumbing, as they are very unreliable. A more acceptable option is corrugated pipes made of stainless steel.

Knowing how to sewer in the bathroom and connect the plumbing to the plumbing yourself will help the home craftsman to do this job correctly. If you are unsure of your own skills, it is better to turn to experienced professionals.