Insert in a cast-iron or plastic sewer pipe: how to do it right

Installation of an additional sink, purchase of a washing machine or dishwasher equipment - all this requires carrying out work on insertion into the sewage system. There are many ways to solve this problem. In this segment of the building materials market there is a wide selection of transition devices. Thus, you can choose the most suitable and easiest option for connecting to the sewer system without any problems.

DIY pipe insert into a plastic sewer pipe

Tee in the sewer pipe

It should be noted that for plastic pipes, the tee is used infrequently due to the high probability of depressurization of the pipeline at the joints. With the help of this device, mainly the branching of the cast-iron sewer line is carried out. To crash into it, you must perform the following sequence of actions:

1. Acquisition of a tee.
2. Overlap of the sewer. Residents of apartment buildings for this purpose are asking neighbors from the upper floors for some time not to use the drainage system of human life. But just in case, basins are left at hand.
3. Measuring the installation location of the tee.
   

   Tees of different diameters for tapping into sewer pipes

4. Sawing a pipe segment to be replaced with a tee. For this, the use of "grinder" is allowed. But a situation may arise when its disk does not reach some points of the circle. In this case, do not complete the dismantling of the pipe segment with a hammer. Due to the brittleness of cast iron, the sewer line may simply collapse. It is better to finish the metal with a hacksaw.
5. Placing a tee in the gap. First, a tee is mounted on the less movable part of the pipe (usually a shorter portion of the riser) and simultaneously retracted to the side. Then the more movable pipe deviates in the same direction and also bites on the used branching element. After this, it is necessary to align the riser line, and drown the pipes into the tee as deep as possible. Temporary fastening can be implemented using the bracket.
6. Welding an old pipe with a tee. When performing this operation, the performer will need considerable skill, since the tight fit of the pipe to the floor or wall significantly complicates access to the welding site.

Helpful information. When inserting into a cast-iron sewer pipe, it is not necessary to carefully mark out (up to a millimeter) markings (of course, within reasonable limits). After all, the elements are connected by butt welding.

A conversation about how to crash into a cast-iron sewer pipe will be incomplete without mentioning the best quality sealants. Indeed, during this work, even experienced professionals form places of potential leaks.

Sealing the cut-in part of the pipe to prevent leaks

For sealing compounds You can use well-known silicone sealant or epoxy. But today, sealing tape is especially popular. It is very easy to use.The joined surfaces must be cleaned and dried, the tape wrapped in a spiral around the pipeline in two layers without folds. And yet, no difficulties!
If we are talking about tapping into a plastic sewer pipe, the installation of a tee in this case is greatly simplified. This is due to the fact that pipes made of plastic are connected using sockets, and not butt. That is, welding is not needed to connect them with a tee, special glue is quite enough.

How to crash into a sewer riser without removing a pipe segment

For this purpose, a connection in the form of a collar having a collapsible design is used. One of its halves is deaf, while the second is a pipe. It is to him in the future that the sewage pipeline is connected, which leads to a new plumbing unit. The clamp installation process is as follows:

1. Overlapping sewage, shut off water.
2. Drilling holes in the pipe.
3. Fixing a clamp with a pipe on a plastic pipe. As a rule, tightening is carried out using a screw connection.
4. Seal insert in the connecting branch pipe. The seal itself is made of rubber and has the appearance of a corrugation.
5. The final stage. Insert the outlet pipe into the corrugation hole.

To crash into a plastic sewer pipe at minimal cost, you can make a clamp yourself. The procedure for the manufacture and installation of such:

• selection of a plastic pipe. The criterion is this: its inner diameter should be equal to the outer section of the pipeline into which it is necessary to make an insert;
• we saw off a piece from the pipe. Its length should exceed by 5-10 centimeters the outer diameter of the new pipe;
• we saw a pipe along its longitudinal axis. One half will be used as the outer back of the clamp;
• we drill a hole in the second half. Its diameter should be equal to the outer section of the connecting pipe;
• glue the branch pipe into the hole;
• carefully coat the inner surface of the manufactured clamp with sealant;
• we fix both parts of the clamp on a plastic pipe.

Helpful advice. To ensure that the insert into the sewer riser is reliable, fix the edges of the halves with tape metal clamps. However, if the sewage system is a non-pressure type, that is, the pressure of the drains transported through it is low, this can be done using ordinary electrical tape.

At the final stage, we drill a hole in the pipe to which we are connecting through the branch pipe. Of course, this should be done very carefully so that the opposite side of the pipeline remains intact.

How to insert a drain pipe from a washing machine into a sewer pipe

This problem is faced by most homeowners. And not only the old buildings, but modern projects. Indeed, in the bathrooms, where washing machines are usually installed, the pipe is partially walled up in the wall, and I just do not want to install another input into the siphon. Therefore, the question of how to crash into a sewer pipe is very relevant today.

Plastic pipe clamp with pipe for tapping into the sewer

To complete this work you will need:

• drill;
• metal strip;
• a clamp for fixing the tap from the machine;
• fluoroplastic sealing material or simply FUM - tape;
• large diameter drill.

The sequence of actions looks like this:

1. We put on the tap a clamp fixing metal strips. To attach to the wall, pre-drill holes in them.
2. Since the insert is made into the sewer pipe, we let water through. So the unpleasant smell will be less.
3. We drill a hole in the pipe. If the diameter of the drill at the disposal is small, expand the hole in circular motions of the file or knife, observing the following requirements: it must remain round, and the diameter of the hole should be slightly smaller than this retraction parameter.
4. We wrap the FUM вод outlet with tape, then firmly insert it into the hole. To regret FUM - the tape is not worth it. If the need arises, house it until a reliable retraction fixation is achieved.
   

   Marking the location of the outlet for the washing machine

5. Next, mark the places on the wall where the metal strips will be attached, drill holes in them and screw the dowels, tightening the clamp on the branch as tight as possible. This will prevent the pipe from falling out.

Helpful advice. At the final stage, coat the edges of the joint with sealant: when it seizes, an additional layer of joint will be obtained.

The exact implementation of this sequence of actions will save you from the need for the foreseeable future to search for the answer to the question of how to insert the drain pipe from the washing machine into the sewer pipe.