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How to cut a plastic pipe into a cast iron riser. How to crash into a plastic sewer pipe: three effective and reliable ways. PVC connection instructions

If you need to install an additional drain in the apartment, you need to know how to bump into sewer pipe so that subsequently there are no leaks. This can be done in different ways. The choice of the best option depends on the location of the work site, material and some other points. If you need to connect to the main sewage system, the scope of work will increase significantly.

Before starting work, you need to check if all the tools and materials are available.

Tee for tapping into cast iron and metal communications

Required tools and materials:

If the work is done with cast iron, you need to purchase a grinder with a stone for metal. For communications made of PVC or polyethylene, you need a hacksaw for metal, as well as a file to remove burrs.
Tee with pipe diameter. The tee can be straight or straight. Check that all branches have O-rings.
Compensating plastic pipe of the same diameter as the pipe.
Silicone sealant.
T-piece plug (if the sewer outlet will not be used immediately).

Important. This method of tapping into a sewer pipe is used for cast iron or steel communications; this method is not applicable for plastic pipes.

Sequence of work

Pick up a tee.
They cut off the sewerage system and ask the residents of the upper floors not to use the sewerage system for several hours.
Measure the area to be cut, trying to do it strictly according to the size of the tee.
A piece of pipe is cut out with a grinder, which will be replaced by a tee. If the pipe is located in a hard-to-reach place, then part of it can be dismantled with a hacksaw. Do not remove the remaining piece with a hammer, there is a risk of damaging the entire cast iron pipe.

To connect to plastic, a tee is usually used

Next, the tee is installed in place of the remote segment. First, it is put on the less mobile short part of the riser. The tee is pushed on and pulled slightly to the side. The other end of the pipe is retracted in the same direction and connected to the branching element.
To make the tee firmly fit into the connection, align the riser line.

Council. Brackets are used for temporary fastening.

Carefully weld the junction.

Without welding

With the help of a flange and clamps, you can insert into a plastic sewer pipe.

You will need a piece of pipe with a pipe. Cut the workpiece so that the branch pipe and part of the pipe overlap the tap-in location.
Drill a hole in the right place, the diameter of this hole and the diameter of the nozzle must be the same. Remove burrs with a file.
Seal the outside and inside of the flange with sealant.

The sealant not only adheres to surfaces, but also protects against leaks

Install the flange on the pipe, tighten it tightly around the edges with clamps. Remove excess sealant from joints.

Technical features of the tie-in

If it is necessary to drill a hole in the pipe at an angle and tangentially, secure the pipe with clamps in the desired position. On top of it, fix the branch pipe for which you want to make a hole.

In this case, the light should fall from above strictly perpendicular. Circle the shadow that the branch pipe will cast with a felt-tip pen, cut along the marked line.

The hole in the pipe can also be made at an angle

Joining of pipes of different diameters

If you need to connect a standard 110 mm sewer pipe with a 90 mm diameter pipe, use an adapter. Pre-coat the joints with liquid soap so that the parts are well connected.

Adapter for hermetic connection of communications

If you need to connect a 95 or 100 mm pipe to a standard pipe, use the toilet cuff. These cuffs are straight and eccentric.

Since a standard 110 mm pipe has a bell, a simple fit with the collar will not be tight enough. To create a strong connection, cut a 5 cm wide piece of pipe, coat it with sealant, and then slide it over the cuff. Insert the collar with the branch pipe into the branch or tee.

Methods for connecting sewer communications

Inset into the central sewerage system

Autonomous system sewage is not cheap. At the same time, from time to time, it requires maintenance with the help of sewers.

Owners of private houses equip a local drainage system if there is no central sewage system nearby. If it is possible to connect to the trunk, this is the best option... Let's find out the main points of connection to the city sewage system.

There are two ways to connect to the sewer: separate or mixed.

With a separate type of connection, storm and domestic drains are connected to two separate outlets. In the mixed version, all effluents are directed into one common pipeline.

Council. To reduce the cost of work, you can negotiate with neighbors and make a collective box.

Project documentation

Before you cut the sewer pipe into a common highway, you need to prepare a package of documents.

The plan of the house and the surrounding area with a sewerage scheme. A surveyor is invited to the place of work, who, after examining the site, develops a plan of the structure and sewer line.
Connection technical conditions. They are prepared by the service organization.
The project for connecting to the central highway is created by the designer based on the plan of the internal system and technical conditions... After that, the document is approved in the architectural department and in the water utility.

Important. Before connecting to the central sewage system, it is necessary to obtain the consent of the neighbors to carry out construction work.

Important points of connection

An inspection well is installed. With its help, you can control and eliminate blockages on the line from home to the entrance to the highway.
Then the well is connected to the sewer outlet from the house. Pipes are laid to a depth of 120 cm or more, the slope of the line per linear meter should be 0.5-1 cm.
In the event that the central sewerage is higher than the outlet line Wastewater a private house, a pressure station is being built.

The receiving well acts as a conventional septic tank. When waste water, purified from heavy fractions, enters the pumping tank, it is transferred to the general system thanks to the pump.

The pump power depends on the height to which the liquid needs to be lifted, on the length of the pressure line, and on the amount of waste water.

Council. You can make one common pressure sewer for several side by side standing houses... In this case, a larger pump is needed.

Not so long ago, it was not easy to connect a new appliance to the sewage system in the bathroom or in the kitchen. Installation work for a cast-iron riser, they were carried out without a grinder, using a hacksaw and a hammer, and this was fraught with the destruction of the entire line - the plumbers needed to show high skill.

Thanks to modern technologies and materials to connect washing machine won't be difficult

Steel tubes sawed with a hacksaw for metal. This tool cannot compete in its performance with gas torches - autogenes, which home master then were unavailable.

Now on the market of building materials and tools, you can find absolutely everything to perform any plumbing work.

Video: tie-in drainage into the sewer riser

If you need to carry out a tie-in into the sewer system, you cannot do without the necessary skills and equipment. Qualified craftsmen will do the job in a few hours; they have not only modern tools and devices in their arsenal, but also many years of experience, thanks to which communications will last for more than one decade.

An insert into the sewer pipe may be required by any person who, for example, decided to install another drain pipe in his apartment either an additional sink, or simply bought a new dishwasher or washing machine.

1

There are several different methods of tapping into plumbing and sewerage pipes. The market of our time offers a huge selection of all kinds of transitional devices that make this process as simple as possible.

The most commonly used method involves the use of a special tee. Its application requires the removal of a small part of the pipe after sawing it.

The specified section of the tubular product along its length should be the same as the tee, which is supposed to be installed on the cut out fragment of the pipeline. This method usually used for metal pipes... At the same time, the tee to be mounted plays the role of a conventional joint sleeve, after the installation of which it will be necessary to weld the joint.

However, there is an easier way when welding is optional. In this case, it is necessary:

cut the pipe;
cut threads with a tap;
connect a fitting with the required number of branches to the system.

At present, it is the described technology that is considered the most preferable, no one wants to create "chaos" in their home, which will certainly arise if a welding machine is used.

If desired, the indicated technique can also be used for tapping into plastic pipes. But then, instead of one pipe, you need to take two small pipe structures and place between them a pipe segment equipped with a branch pipe. Such a branch pipe just makes it possible to connect additional equipment to the old sewer system.

2

If you don't like the tapping method, which involves cutting the pipe and removing some of it, you can try a different technique. For example, prepare in advance a section of a tube with a branch pipe of a specific size and section. After that, make a hole in the pipe, where it is planned to embed an additional structure. The hole in its cross-section, as you yourself understand, should be identical to the hole in the previously prepared branch pipe.

Then you need to lubricate the surface of the flange that you plan to attach with sealant, as well as the surface around the hole, attach the pipe and flange to each other. To increase the reliability of the resulting connection, it is desirable to use clamps. They are tightened until the sealing compound appears on the joint surface. It should be removed immediately. In situations where there is a small pressure of water (drains) in the system, it is allowed to use ordinary electrical tape instead of more expensive clamps.

Also, a pipe cut can be carried out using a special adapter with a cross section of 5 centimeters, which is designed for installation on pipe products with a diameter of 10-11 centimeters. The procedure is performed in this way:

access to the sewer pipe is blocked;
calculate the distance of the pipe from the installed tie-in;
prepare a crown of the required diameter, which is attached to an electric drill and a hole is made in the pipe.

Further, if an adapter equipped with bolts is used, they must be tightened. If bolts are not provided, the insert is applied to a well-degreased surface and the nut is carefully tightened. In this case, it is also recommended to additionally process the junction of the structure with the adapter with a sealing compound, which will give one hundred percent guarantee that the pipeline will not leak during its operation.

IN Lately, in addition, they often began to use tie-ins with a plastic fitting. They are designed for installation on pipes with a cross section of 32 to 40 mm. Such options for inserts have a diameter of 19 to 22 mm. The essence of their installation is similar to the processes described above.

3

As you know, before, almost all domestic sewage pipes were made exclusively of cast iron. There were many reasons for this, we do not plan to discuss them here, a lot has been said about the merits.

Nowadays, more and more often old cast iron systems are being replaced by more modern plastic ones. Moreover, in many apartments the sewage system is made of cast iron pipes. And it is in them that new branches often have to be cut in order to connect one or another household unit that requires a supply and drainage of water.

All of the previously described tapping methods are suitable for cast iron structures. You can use a ready-made tee or flange, or make the latter yourself according to the following scheme:

a pipe section is taken with such a cross-section (internal), which is similar to the cross-section (now external) of the pipe product to which it is planned to connect;
cut the pipe in the longitudinal direction, make a hole in it of the corresponding section and connect the pipe (this element is welded).

Here we immediately note that welding should be carried out extremely responsibly, so that later a tie-in into cast iron pipe plumbing or sewerage did not turn into serious problems. In some cases, as we have already said, instead of welding, a sealant and special clamps are used. But only when the head of the flow in engineering system minimal.

4

Having conceived to carry out such a responsible process, pay attention to following tips specialists in this field:

Finally, we add that you need not to be lazy and bypass all the neighbors from above, asking them not to use the sewer during the time when you will carry out the tie-in. Otherwise, the success of the planned operation depends solely on your abilities.

So, given: there is a sewer pipe. Most often a riser; but options are possible. And there is a need to connect to it and use it for wastewater disposal. What are the ways to do this?

We'll look at cases correct installation sidebars and a case to resort to in the absence of better alternatives.

The right way

Materials (edit)

Before embarking on hostilities, you need to thoroughly prepare.

First, we will stock up on everything you need.

Psychological preparation

If we are talking about a riser, we punctually bypass all the neighbors from above, tearfully begging not to use the sewage system at the set time. For those who cannot be found at home, we leave notes.

Tip: take care of a large basin at the same time and get ready to wash the contents of someone else's toilet from the walls. Because, as many years of practice show, someone will definitely forget about your request.

On the warpath

First, you need to clearly understand what we want to do.

We will need to cut out a section of the riser (or other pipe), pull the tee on one side of it, and the compensating pipe on the other (the upper, if we are talking about the riser), and then move the expansion joint by inserting its narrow part into the tee.

This understanding is needed in order to cut just as many pipes as needed and where needed. Have a clear idea of where which fitting will be located. The distance between the cuts will be equal to the length of the expansion joint.

And only after that, into battle.

Cut out a section of the riser.
We quickly clean the burrs with a file. They will be on both plastic and cast iron.
We coat the outer side of the pipe where the compensator will be with sealant directly near the cut.
We pull the compensating pipe on the pipe completely, so that there is room for putting on the tee.
We coat the second pipe truncated by us with sealant and put the tee in place.
We coat the narrow side of the expansion joint with sealant and place it on the pipe so that the narrow side fits snugly into the socket of the tee.
We muffle the tee with a pre-fitted plug, or continue assembling the sewer from the tee.

Important: If the section of the riser from above remains without fastening and is held on one bell - do not be too lazy to purchase a clamp for plastic sewer.

He will not allow the pipe to slide down and undock with the upper section of the riser.

Wrong way

How to cut into a sewer pipe if it cannot be cut in any way, and the insert will be less than the diameter of the main pipe? Say, you need to cut a drain with a diameter of 50 from a bathtub and bidet into a riser with a diameter of 110 millimeters?

The item we need is called that - a tie-in to the sewer. It is a surface plate with a perpendicular outlet and a fastening system.

If we are talking about a horizontal pipe, we simply drill a hole of the corresponding diameter and fix our inset opposite it. From above or from the side - as it is more convenient, the aromatic waters splashing in the pipe are not a hindrance to us.

If we need to secretly damage the riser ... The mystery will not work. Again, we'll have to bow to the neighbors from above. This will turn the stormy stream pouring down the riser into a small trickle, which will only slightly douse you in the process of work.

Why is this method called stupid and plumbers, seeing such an inset in the riser, say a lot of bad words not from Dahl's dictionary? Because this method of tapping leaves protrusions and burrs inside the riser.

A cut-in from above into a horizontal pipe is the only case when you will not be stigmatized for this method of connection

Any change, any protrusions, especially sharp ones, is a place that will collect all kinds of rags flying down, long hair, used hygiene products and other unappetizing things.

Hence - frequent blockages of the riser and leaks on your head from the neighbors' toilet.

Conclusion

If possible, opt for the right way sidebars. If this is not possible - well, you have been warned ... Good luck!

Plugging into a sewer pipe will require an appropriate tool, depending on the method and material of the pipes. How to crash into a plastic or cast iron pipe, we will consider in more detail in this article!

Situations often arise when it is necessary to insert a pipe into an already operating sewer system to organize a drain from a new household appliance. Naturally, you can just get by with a tee. However, this approach can only be implemented when a tie-in is made into a cast-iron sewer pipe 110. In a system built from PVC pipes, one tee is not enough.

Tie-in technology

There are several options for solving the problem.

Tapping with a tee

As noted earlier, this option is used in 90 percent of cases in a situation where the tee is mounted on a metal pipe. The thing is that welding will have to be used to strengthen the junction of the two parts. And at the initial stage of work, it is necessary to cut the pipe and cut off a piece, which in its parameters will most closely resemble the tee used for installation. It should be borne in mind that the tee in the considered tie-in method will be fitted in the form of a sleeve on the pipe section.

When work needs to be done with a system made using PVC pipes. One pipe should be replaced with several short sections, between which a piece of pipe equipped with a branch pipe will be placed. It is in this part that additional equipment will be connected. The problem in this installation is the connection with the help of sockets, which are intended for inserting the pipe.

Tie in PVC pipes

A tie-in into the sewer system, during the installation of which plastic pipes were used, can be carried out on our own. For work that will solve the problem of how to crash into a plastic sewer pipe, you will need:

Prepare a piece of pipe together with a branch pipe of the required diameter.
Prepare the workpiece. This stage of work involves leaving part of the part and the branch pipe extending from it. The distance is calculated so that the insertion point into the main part is reliably blocked.
A hole is drilled in the pipe, with a diameter identical to the width of the nozzle.
On the inner side sealant is applied to the flange. Also smeared and outside details near the hole.
The flange is put on the pipe and is tightly attracted along the edges with clamps. The fastening should be tightened gradually until the sealant begins to ooze from under the flange. Remove excess grease.

If the tie-in into the sewer pipe is carried out in places with a small liquid pressure, then there is no need to use clamps. Here it is enough to connect the flange to the pipe with ordinary electrical tape.

Insert into a metal pipe

If you need a tie-in into a sewer riser made of metal parts, it is best to use a ready-made tee that has a slightly larger diameter than the pipe. It is necessary to first separate the part without a branch pipe from the tee.

However, there are often situations when you have to prepare the flange on your own. To do this, you need to purchase a pipe, the value of the inner circumference of which will coincide with the value external parameter the circumference of the connection pipe. Next, the part is cut longitudinally, a hole is drilled in it and a branch pipe is welded. To fully answer the problem of how to cut into a cast-iron sewer pipe, it remains only to weld the prepared flange to the pipe. If the welding machine is not at hand, then any hermetic mixture and clamps should be used.

It is worth remembering that before starting the tie-in, you need to make sure that there is no fluid pressure in it.

Tapping fixtures and how to use them

The situation when you need to connect to an already functioning sewage system can arise at any time. Buying a new dishwasher or washing machine, installing a washbasin or faucet, connecting a heating pipe - all of the above is the reason for tapping into the sewer system.

The modern market is ready to offer the consumer a wide range of various adapters, which are ideal option solutions for each specific situation. Connecting with them will not be a problem. Currently, there are two most common punching methods:

Using an adapter. This option is used when a tap is made into a sewer pipe of 110 or 100 millimeters. By the way, when a tap into the sewer 110 is carried out, the size of the adapter will be 50 millimeters.
The use of plastic fittings. This option is used when mounting to a pipe with a diameter of 32 to 40 millimeters.

To perform high-quality work with the adapter, you should follow the following list of simple steps:

Restrict water access completely.
Attach the crown to the drill and use a power tool to make a hole of the desired size in the pipe.
If a bolted adapter is used, then the part is slid onto the pipe and the bolts are tightened.
When installing without fasteners, the surface is pre-degreased, an insert is applied and the nut is tightened.
To prevent leaks, it is worth additionally lubricating the junction with a sealant.

The quality of the tie-in into the sewage system will allow the home owner to avoid repairing the entire system and connect a new plumbing or household appliance without unnecessary problems.

Ways of tapping the outlet from household appliances

It is this problem that often becomes the reason for the sewer connection. At the same time, it arises not only in houses of the old layout, but also in new apartments, designed taking into account modern operating conditions. It is in such houses that the pipe in the bathroom, where the washing machine is installed, is concreted into the wall. So it turns out that it is easier to make a tie-in than to deal with the installation of a new siphon with seven ensuing consequences.

To work, you need the following tools:

Metal strip, drill and drill with large diameter.
Clamp for fixing the branch.
FUM tape.

The work is carried out in the following sequence:

A clamp is put on the outlet, intended for fastening metal strips. To fix the clamp on the wall, drill holes in it.
Since a tie-in is carried out into the pressure sewer, it is necessary to skip the water. This action will avoid the appearance of a fetid odor.
A hole is drilled in the pipe. If you can't find a drill of a suitable diameter, then a sharp knife or file will be required for further work. With their help, you can expand the hole. It is important to understand that the hole must remain round, and its diameter can be only two millimeters less than the identical parameter in the bend.
The branch is wrapped with FUM tape and inserted into the hole. There is no need to try to save money on the tape and, if necessary, it is better to wind it completely for a secure fixation.
Places of fastening of metal strips are marked on the wall, in which holes are drilled and dowels are screwed in. The fasteners are twisted with maximum tightness in order to firmly and securely fasten the clamp to the bend.

The last step is to smear the edges of the joint with a sealant. As soon as the grease hardens, an additional connecting layer forms at the junction.

History famous brand from Scotland, McAlpine began with the production in 1902 of products for the drainage of water - metal siphons. Today the company occupies a leading position in the production of siphons used in various fields. Sewer pipe insert (plastic) McALPINE Ø110x50 serves for internal wiring of the sewer system. The modern adapter is mounted by tapping into a pipe, the diameter of which is larger than the diameter of the product. The insert into the sewer pipe 110, which can be bought quickly and easily in our SantechMark online store, is distinguished by its practicality and durability.

The model undergoes strict quality control in production. The developers check the tie-in clamp for correct casting - the body must have a uniform wall thickness without sagging. The resistance to temperature extremes is also checked - the adapter is exposed to 250 cycles of exposure to water with a temperature of +2 and 95-100 degrees. At the last stage, the brand's engineers check the tie-in to the sewer pipe for its ability to withstand the action of aggressive chemical compounds.

An adapter with a diameter of 110 mm allows you to additionally connect a drain from other plumbing elements, such as a toilet bowl, to the sewer pipe. In this case, you do not have to open the main pipe. For installation, the 110 has a 50 mm inlet in the sewer pipe. The structure is made of durable gray plastic. To install a tie-in into a plastic sewer pipe, a straight connection section is required. A hole of the required diameter should be cut in it, after which the surface must be cleaned. Then the insert is inserted with the fastener, which for reliability must be tightened more than 3 times counterclockwise.