Cutting into the water pipeline under pressure: make existing networks, existing permit, main, sanitary

The insertion into the water pipeline under pressure has a number of features that need to be studied before operating Sometimes it is necessary to extend the water supply. It is then used to connect other pipes. Often work has to be done under pressure. The plumbing procedure of the tie-in has its own peculiarities: it is necessary to use special tools, to possess the necessary skills and to obtain the appropriate permission.

Necessity of obtaining a permit for a sidebar in the

First you need to familiarize yourself with the site plan. This will help to find out which communications are located underground. The received document together with papers on the house and the site should be submitted to the branch of the water channel.

Prerequisites for tie-ins:

• Tie-in place;
• Pipe diameter;
• Other components that affect the purpose of the connection.

For the tapping into the water pipe, you must obtain all the necessary approvals

The collected data is sent to the SES, after which the design and registration of the estimate and project are performed. Run by yourself is an illegal exercise. To do this, you need to seek professional help.

Illegal tie, without appropriate permits, is punishable by administrative and material liability.

There are a number of works that are prohibited. These include fraudulent connection, bypassing the accounting device, into a large pipeline of the backbone network, on which the power of the house depends. Also illegal tapping into a water pipe that is not connected to the sewer.

Core insertion into the existing

water supply. The tapping methods are classified according to the piping material. Usually such material is plastic, metal, metal plastic, cast iron. A certain hole must be made for connection. When these jobs are carried out under pressure, it is quite logical that water will lash out from the generating hole. That's why they use clamps, which are equipped depending on the pipe material.

Basic rules to be observed when inserting:

1. The diameter of the embedded pipe and the drill bit must be exactly the same;
2. In this case, the pipe that is embedded must have smaller dimensions than the one in which the hole is made.

When the tapping process takes place under pressure, the use of clamps is mandatory.

The connection work depends on the type of water pipe. Most often, they resort to welding using clamps.

When working with plastic pipes, gas and electric welding are used.

The welding process is accompanied by welding of the coupling and thread. These parts are then attached to the root tap. When doing this work, the water must be drained, and the water supply itself is shut off.

Sequence of tapping water pipes into operating networks

In the case where it is impossible to shut off water, you have to perform work under pressure. The process itself is much more difficult. It is necessary with all responsibility to approach the sidebar and fully comply with safety regulations. Of course, this should be done by an experienced master, not an amateur.

Connection Sequence:

1. The first stage is the cleaning of the place of work and removal of insulation. It is important that the diameter of the embedded pipe is less than the water pipe.
2. On the water pipe, the clamp, pipe and flange should be installed. A locking device is connected to these elements. A part of the pipe for drilling is mounted on the valve.
3. The gate valve is opened, a milling cutter must be installed through it and the gland of the blind flange. Its size should coincide with the size of the hole made. After the hole is formed, the milling cutter will no longer be needed, it can be removed.
4. The locking device should be closed and removed.

It is important to comply with all the rules and sequence of work when the water inlet

Overall, the work is quite fast. The locking device helps to hold back the water pressure.

To connect to existing networks, it is necessary to have a special drilling tool designed for such work.

With steel pipes, the locking device is mounted on the welded pipe, and not on the clamp. After all work, you should check the seam for defects. If there are any, then it is necessary to weld a little.

Features of the tie into the main water supply

The work on connection to the main water supply depends on the water supply material. That's why technology can differ. Consider the sidebar in the cast-iron pipe. This material is harder than plastic, but it can burst at any time.

During the drilling of the pipe, do not forget to periodically exchange special plates, as the crowns are dull and can not perform their direct functions.

Tapping technology in the main water pipeline:

1. Dig out the pipe and clean it. At the connection point, it is necessary to cut off the upper layer of cast iron with the help of a grinder.
2. The pipe must be fitted with a collapsible saddle. Between it and the collar there must be a rubber seal, which will ensure watertightness.
3. It is then necessary to install a shut-off valve that is attached to the flange. Through it will be a tie-in.
4. The next step is a direct tie.
5. The finishing work consists in removing the cutting tool, overlapping the water.

To drill a hole in the pipe use a special crown with special plates. Only they are able to cut cast iron.

How to cut into a water pipe under pressure( video)

It is not so easy to make a cut in an existing water pipe with your own hands. It is important to take into account the material of the water supply. Cast iron version, for example, has its own characteristics and requires special tools. The same applies to plastic and metal. Before starting work, you need to get permission, otherwise the procedure will be considered illegal and will entail consequences.