While renovating a bathroom, plumbing often changes completely. In this case, you may need to connect the bath to the sewer. You can do this yourself, but you need to take into account the fact that a poorly connected plumbing object can leak, which will make itself felt with an unpleasant smell in the room. How to connect the bath to the sewer with your own hands correctly?
Preparatory work
When the dismantling of the old plumbing is carried out, and a brand new bathtub is waiting for connection, you should properly prepare for this. Sometimes it is necessary to replace pipes and wiring, especially when remodeling a bathroom. It is important to understand the location of the pipes in order to make the connection more convenient.
When rearranging plumbing, it is important to draw up a detailed plan on paper. It must indicate the number and locationpassage of pipes, as well as their joints.
Required Materials
When connecting the bath to the sewer, the following materials should be in stock:
- prefabricated bathtub siphon;
- sealant;
- Riser fittings;
- sewer pipe with a diameter of 10 cm.
There are several varieties of bath siphons, so you need to consult the seller when buying.
Pipe selection
Today, heavy metal pipes are rarely used - they are prone to corrosion, heavy and bulky. They were replaced by modern polypropylene or PVC pipes. It is important to use class B plumbing pipes. They have thick walls that are suitable for draining hot water, which is especially true if a washing machine is connected to a common riser.
Siphon selection
This plumbing fixture is key when connecting the bath to the sewer. Siphons come in two varieties - semi-automatic and automatic.
Semi-automatic siphons have a pipe design that connects to the two openings of the tub. Such designs are also equipped with a plug for clogging the lower drain and a cable for attaching to the siphon.
Automatic siphons are molded from semi-automatic ones by the absence of a plug that must be inserted and removed by yourself. They are equipped with an automatic valve operated by pressing.
Sewer system
Creating a scheme for connecting a bath to a sewer involves the following algorithm of actions:
- A rubber gasket is installed in place of the drain. For additional fixation, the joint can be smeared with silicone sealant, which does not allow water to pass through.
- The drain pipe is pressed tightly against the gasket and fixed with a screw or clamp.
- The overflow neck of the bath is connected to the drain using a plastic corrugation.
- The hose discharged into the sewerage system is attached to the siphon with a union nut.
Connecting a bathroom siphon to a sewer does not require much physical effort. In addition, such a system does not need careful maintenance, it is enough just to follow some recommendations of experienced plumbers:
- Semi-automatic and automatic siphons have metal linings that need to be cleaned periodically to maintain an attractive appearance.
- It is important to periodically inspect the joints for leaks. If there are, it is important to tighten the joints with clamps or replace leaky sealing gum.
- Siphon blockages must be removed with a small brush or plunger. When using aggressive products containing acid, it is important to study their composition and instructions in order not to damage the pipes.
In some cases, the siphon needs to be dismantled to clean it thoroughly.
Joiningriser
Any bathroom sewer connection scheme is not limited to connecting a siphon to a bath. It is also important to connect it to the central sewer. To do this, you should be guided by some rules:
- The siphon must have holes capable of draining water.
- It is important to use a fixture that is made from smooth and rigid pipes.
- The use of corrugated elements for draining should be abandoned.
You can connect the siphon either directly to the sewer pipe or using a special adapter.
It is recommended to use silicone sealant during installation to treat joints, otherwise water may get under the bathtub.
If there is an unpleasant smell in the bath
Most often, dampness and stench can appear in the bathroom if the bathtub is not properly connected to the sewer. To eliminate bad odor, check the following points:
- When installing a siphon, care should be taken to have a water seal - a container of water that will prevent the penetration of sewer odors. If not, then you need to replace the siphon.
- The water seal may be missing if the siphon breaks, in which case characteristic gurgling sounds will occur when the water is drained. The faulty mechanism also needs to be replaced.
- An unpleasant odor can occur if ventilation is disturbed in the sewer riser. Unfortunately, this problem is difficult to solve on your own and requires the involvement ofqualified plumber.
It is recommended not to cover the hoods with dense materials, which are available in every bathroom. Thus, the natural circulation of air is disturbed, its stagnation occurs and an unpleasant smell appears.
Also, the problem of smell from the sewer may lie in violation of the integrity of the riser. This often happens in old multi-storey buildings. It is important to involve qualified plumbers and fix the leak in time.
Bathtub installation
Before you connect the bath drain to the sewer, you must install this plumbing element. Methods differ depending on the material of the tub:
- Today's popular acrylic containers must be installed on a solid substrate of bricks, foam blocks or timber. In addition, ready-made kits with a metal case are available that do not require separate fasteners.
- Metal baths are fixed with mounting foam. This is necessary in order to avoid deformation.
- Cast-iron baths are the most durable and often have adjustable legs on which the structure is installed.
Regardless of the material of the bathtub, a decorative box is often erected around it. At the same time, it is important to leave free access to the siphon, which sometimes requires cleaning, repair or complete replacement.
Sink connection
In the bathroom, except for the bathtub or showerThe cabin is usually also a sink. How to connect a sink to a bathroom drain?
To perform such manipulations, you will also need a siphon. It is significantly different from the one used for the bath, but their design is similar. It also has a water seal that prevents sewer odor from entering the room. Installation of the sink siphon is carried out in the following way:
- A special rubber gasket must be placed on the rim of the drain hole of the sink.
- After that, a mesh is placed on it to hold large debris, its diameter must match the size of the hole and the rubber gasket.
- The inlet pipe is mounted from below by tightening a special screw.
- After that, the siphon is fixed. To do this, you need a wide nut that is tightened by hand.
- To connect the siphon to the sewer, a plastic corrugated hose is used. It usually has a smaller diameter than a sewer pipe, so it is recommended to use a special adapter to connect.
All joints must be coated with silicone sealant. In addition, if the design of the sink does not imply the presence of a rubber gasket and it will rise above the level of the bottom, then you also need to use a sealant. Otherwise, there is a risk of water accumulation at the bottom of the sink.
Helpful tips
Experienced plumbers are guided by the following rules for connecting a bath to a systemsewers:
- Siphon designs may vary, so it is important to fully read the instructions that come with the element before assembly.
- All plastic structures must be assembled by hand, as the use of rough tools can damage them.
- Only after final assembly, one end is connected to the bath drain, the other end to the overflow, and the third directly to the sewer pipe.
In order for all joints to remain airtight, it is important to assemble them according to the instructions.
Connecting the bathtub to the plumbing
Simply connecting an acrylic bathtub to the sewer is not enough, it also needs a plumbing system. In order to connect the container to the water pipes, you must perform the following steps:
- Before connecting the mixer, it is necessary to install a shut-off valve in front of the coupling.
- The connection points are wrapped with special tapes.
- There must be rubber or silicone gaskets inside the mixer, after checking their presence, you can begin installation of the structure.
- It is important to screw the faucet on both sides at once for uniform installation.
- Two tubes are attached directly to the mixer - for hot and cold water. They must be attached to the faucet and piping respectively.
You should also remember that the recommended height of the faucet above the bathtub is 30 cm.
In addition, there are faucets that are connected directly to the water pipeswithout the use of additional hoses. When installing them, sealing elements must also be used to prevent leakage.
