How to cut a plastic pipe into a metal water pipe. Pipe tapping without welding: review of tapping technology

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Hello dear reader! The topic of today's conversation will be plastic pipes. They have already become widespread and home craftsmen often face the question: how to cut into a plastic water pipe? In this article you will find out the most accessible and step-by-step algorithm, nuances, advice from professionals on how to avoid mistakes during this operation.

The need for such work arises when:

pipe replacement;
installation of a water meter, additional plumbing;
connecting the washing machine drain;
changing the location of kitchens, baths, toilets;
other similar situations.

Purpose of the procedure

The purpose of the procedure is to connect the branch to the main pipe or main.

New wiring needs to be done inside the house.

Connection to a common pipeline occurs during the construction of an individual house or other facility capital construction, organizing diversion to another direction. At the same time, water intake is calculated, the diameter and material of secondary pipes are selected. Outlet pipes are selected based on the pressure values in the main line.

The essence of the process

To connect the outlet to the main pipe, you need to drill a hole in it using soldering or fittings various types connect the outlet pipe.

If it is impossible to turn off the water supply, the hole and connection are made using special clamps.

During the operation, two general conditions must be met:

the diameter of the drill and the diameter inside the outlet pipe must match;
The additional pipe is smaller in diameter than the main one.

What documents are required to tie into the main water supply?

It is forbidden to make a connection into a common water supply main without the permission of local authorities. This will entail penalties and administrative liability.

To connect to a common main water supply, the owner of a household must obtain permission from the department that is in charge of the pipeline.
An application is submitted to the local water utility authority, accompanied by documents confirming the rights to land plot and a house, as well as a cadastral plan of the site.
Vodokanal specialists will prepare technical specifications indicating the volume of water intake permitted for the applicant and the location of connection.
After this, it is necessary to obtain a conclusion from the regional SES for connection to the water supply network.
A topographic survey in the form of a drawing with all the necessary information about the site, the objects built on it, including underground ones, indicating the location of the water intake well, will be done by cadastral engineers.
A water supply project for a house is ordered from the design department of the water utility.
IN public services a warrant is issued for earthworks.

Only representatives of the water utility have the right to make connections into a common plastic, steel or cast iron pipeline.

After connecting to the main line, the SES takes samples and checks the quality of the water, draws up a certificate of washing and disinfection.

The water management service accepts the work and issues a certificate of compliance with technical conditions. Concludes an agreement with the owner of the property on the operation of the water supply pipeline.

Inset options

According to their technology, methods of inserting into plastic pipelines are divided into two conditional groups.

Fastening to a pipe with an outlet for a branch.
Cutting out a section of pipe and connecting its ends at the cut site with a tee.

The first method is to secure the crimping strip to the pipe with bolts or welding built into the strip heating elements.

In the second option, connections are made using welding using a special apparatus or using fittings of various types.

Let's consider existing methods connection of branches.

Using a crimp clamp

Such a clamp consists of upper and lower linings that match the dimensions of the pipeline.

A rubber sealing part with a hole is placed on the pipe. Its function is to prevent leakage. Next, the linings are installed on the gasket at the top and bottom of the pipe, tightened with bolts and nuts.

The pipe is drilled through the hole in the outlet pipe located in the top cover. Then a tap is connected to it.

Connecting a tee or manifold

Tee insertion is considered classic version insets. The essence of the operation is that a part of the pipeline is cut out, and a tee or manifold is installed in its place. An outlet pipe is connected to them (if the collector has several outlets at once).

Connections to the pipeline using a special apparatus or fittings of various types.

Electric welded saddle

A regular saddle pad is a crimp clamp pad that we have already discussed.

Unlike inserting a tee, it does not involve cutting the pipe product, thereby not violating its integrity. To create a branch, it is enough to drill a hole of the proper size in the main pipe.

The design principle of an electric welded saddle is no different from a conventional one, but it is equipped with heating coils built into its body. When connected to the electrical network, these elements heat the plastic, the parts of which are welded and form an inextricable connection.

Electric welding saddles equipped with a cutter allow you to perform a plunge operation without shutting off the water in the pipeline.

The working process is to install the upper and lower parts of the cover on the pipe. Electrical power is supplied to the saddle, causing parts of the lining to be glued to the pipe. After the material has hardened, drill a hole the right size, scrolling the built-in cutter. Then all that remains is to connect the outlet.

Insertion using a pipe

Insertion using a pipe is used in secondary areas, in pipes low pressure, for example, a sewerage pipeline. This method good because it does not require cutting the pipeline and can be produced without welding.

The pipe should be in the form of a clamp with a girth that would be enough for the entire diameter of the riser.

Mark the location for the pipe.
Drill a hole with a crown, the size corresponding to the diameter of the pipe.
Secure the pipe by tightening the ends of the clamp with a screw and nut.
Insert into the pipe rubber compressor, and through it - an outlet pipe.

You can use an adapter for pipes that are significantly smaller in diameter than the main one.

Considering that in the sewerage system high pressure no, such a connection will last a long time and reliably.

Which way is better

Inserting a tee using welding with a special apparatus is considered the classic and most reliable method. Another thing is that it is not always physically accessible due to lack of space for work. Therefore, various types of crimp pads are used.

Electric-welded saddles with built-in heating elements and a cutter for drilling have proven to be easy to install and simple in technology. They can be successfully used by people who do not have repair skills.

Do it yourself or call a professional

If the work is carried out inside the house, with domestic water supply, then invite a specialist special meaning No. If difficulties arise with the welding machine, you can use an electric welding saddle equipped with a cutter.

But when connecting a water supply to a public main, you cannot do without professionals who have the appropriate clearance.

Approximate cost of work

Connecting a private household to the main water supply network is the most labor-intensive and financially expensive process. The cost of work depends on the distance to the well, the volume of excavation work, and the price level for services in the region.

The approximate figures are as follows:

obtaining technical specifications and other documents, approval – 22 thousand rubles;
costs for pipes and other network elements – 9-10 thousand;
fee for connection to the central network and work on inserting into the highway - from 20 to 50 thousand;
earthworks – up to 10 thousand;
complex work on laying a network - 2-2.5 thousand per 1 meter.

Thus, the total cost can range from 80 to 115 thousand rubles.

Do-it-yourself insertion

For independent work according to the box in plastic water pipe inside the house it is necessary to outline overall plan works, purchase materials, prepare tools. Materials should be purchased after determining the required dimensions.

Equipment such as a welding machine may come in handy once every few years. It makes sense to borrow it from friends or rent it.

Required tools and materials

Materials you will need:

polyethylene pipes (HDPE);
tee of the appropriate size.

The set of tools will consist of:

soldering iron;
pipe cutter;
construction pencil.

Work progress

It is necessary to embed the tee into the plastic riser.

As a rule, risers are located close to the wall. Therefore, for ease of installation, the embedded unit is assembled in advance. It consists of a tee, an outlet and a shut-off valve installed on it - a valve.

The assembled assembly is applied to the pipeline, the cutout area is measured, and the cut locations are marked.

Turn off the water, open the water tap and completely drain the remaining water from the system.

Using pipe cutters, cut out the intended area.

The assembly is installed using an electric soldering iron for plastic. For PVC pipes you can use glue.

Pipes are often located close to walls. There may be problems using the soldering iron. In this case, push-in fittings or press couplings are used.

Video

Here you can look great video to understand all the details:

If you do not have the skills to use a soldering iron, it is better to first get practical experience on pipe sections.

The nuances of tapping into a water supply system under pressure

To cut into the pressure pipeline, clamps-plates or electric welding saddles equipped with a cutter built inside the lining are used. It is located in a hermetically sealed housing and when drilling, splashes of water do not interfere with the process.

In this article we will talk about what a clamp is and how it is used for tapping into a water supply under pressure. The topic of the article is universally relevant, since the devices that will be discussed are the most common module used when connecting to central water supply systems.

With the right approach to choosing this accessory and using it correctly, you can install the pipeline yourself, using a simple and widely available tool.

Features of application

First, let’s determine what the instructions for using mortise clamps are. Most of the modern water pipes were assembled from. Thus, there is no need to use traditional welding and a special clamp can be used for insertion.

As a result of installation work using such accessories, it is possible to achieve optimal strength of the connection between the branch and the main.

Note!
Repair clamps for water pipes are used when it is not possible to shut off the supply of the transported medium and it is necessary to work under pressure.

The quality of installation work depends not only on the skills and practical experience of the installer, but also on the correct selection of devices intended for insertion.

Assortment of the most popular clamps

Based on the characteristics of the pipeline configuration and in accordance with the type of materials used in its assembly, certain categories of mortise clamps are selected.

Let's look at the range of modifications on the market:

The clamp-clip is used to connect to a water main that is not under pressure.
The design of the device consists of two parts, one of which is equipped with an outlet with internal thread. Installation of the accessory on the highway and installation is carried out using bolts. There are modifications of the clip available on the market, made of plastic or metal.

The saddle type clamp is used for tapping into asbestos-cement, metal and plastic pipelines. Unlike the “clip”, the device consists of one main part – the “saddle”, which is fixed to the pipe using a flexible tightening bracket.
Most of these devices are made of metal. Saddle clamps are universal, as they can be used for connection to the main line both under pressure and without pressure.
The drilling clamp is specially designed for tapping into pipelines operating under high pressure.

The device is a prefabricated module equipped with special attachments and rotary connectors. A device of this type can be installed on plastic, cast iron and steel pipelines.

Important: Special equipment is required to install drill clamps.

The electric welded saddle clamp is intended exclusively for insertion into plastic pipelines. The design of the device includes such components as a cutter for drilling polymer surfaces and a heating coil.

Features of tapping into polyethylene pipes

Polyethylene plastic material, and therefore inserting branches into the main line can be done in several ways using easy-to-use equipment. Due to the relative simplicity of installation work, the price of the finished result is low.

Let's consider the most popular and popular methods of insertion. Installation by drilling a hole of a suitable diameter with a crown or drill and then installing an outlet.

This method is the simplest, but under one condition: installation work It is advisable to carry out at minimum or zero pressure of the transported medium. Again, this method does not imply the need to purchase expensive clamps, since any will do, but with an outlet corresponding to the diameter of the pipes.

The installation instructions are as follows:

The main is being excavated and a trench is being prepared for the outlet.
The diameter of the line is measured to determine exact size clamp.

Important: The clamp is selected so that its internal diameter in the installed position is a couple of millimeters smaller than the outer diameter of the pipeline.
Only in this case you are guaranteed to get a connection with high degree tightness.
Again, the crown that will be used for drilling should be a millimeter of the already selected outlet.

Since there is no pressure in the system, we first drill the required hole and only after that we put on the saddle and tighten the bracket. Don’t forget to place a rubber gasket under the bracket and seat, which will simultaneously ensure greater tightening efficiency and allow you to achieve an optimal degree of tightness of the connection.

If installation work is carried out on a line under pressure, it is used. In this case, special equipment is needed that supplies current to the welded coupling installed on top of the pipe.

Features of tapping into cast iron pipes

Despite the fact that there are fewer and fewer cast iron mains today, they still exist. Therefore, sometimes it becomes necessary to connect to pipes of this type. How to do it right?

Before you begin installation, you should understand that cast iron is a special metal with special physical and chemical properties. For example, as a result of excess mechanical impact, cast iron products crack or crumble.

Therefore, when drilling holes for connecting branches, a special drill with a sharpening angle of 116-118 degrees and straight grooves is used. If it is intended to drill a hole to the required diameter in one stage, a crown with soldered carbide plates is used.

Important: It does not matter what type of drilling equipment is selected, since any drill must be constantly cooled during the drilling process.
Special oils or just water can be used as a coolant.

Tapping into cast iron is done both using metal clamps and using their plastic analogues, which are also strong and durable.

The section of the pipe where the connection will be made is thoroughly cleaned of possible contamination and degreased. Next, a section of pure metal is covered with a layer of sealant or a rubber layer is placed in this place.

Next, a clamp is applied so that the outlet hole coincides with the hole made in the pipe wall. If the insertion is carried out under pressure, devices designed specifically for this type of installation are used.

Important: Installation of pressure bends on main lines requires obtaining special permits from the relevant organizations.
In some cases, tapping under pressure must be carried out with the participation of qualified specialists.

Conclusion

Now that you know what clamps for repairing water pipes are, it will probably be easier for you to choose necessary equipment for use in private households.

Still have any questions? Necessary clarifications can be obtained by watching the video in this article.

Most in an accessible way To provide a house with water supply, it is necessary to insert it into the existing water supply system, that is, into the existing central pipeline. However, not in all cases it is possible to shut off the water, which necessitates the need to tap into plumbing system under pressure.

Features of tapping into a water pipe

Before starting any work, it is imperative to obtain the appropriate permission. When performing an illegal installation process, there is a high probability of being brought to administrative responsibility.

According to the rules, for tapping you must take a permit signed by the management of the local water utility and a plan of the site where the work will be carried out. In addition, technical conditions will be required, to obtain which you will have to visit the central department of the water utility. Specifications usually contain information about the connection location, data for tapping, as well as the diameter of the pipeline of the underlying main.

In addition to water utility workers, other companies specializing in such work with the appropriate license can develop design and estimate documentation. The price for services related to the preparation of documentation for tapping into a water supply system under pressure may be slightly lower for such organizations.

However, in the future there is a possibility emergence conflict situation with representatives of the water utility, who do not always approve such project developments.

Having received the necessary documents, you should contact the SES department, where to register the project. Here you will also need to write an application to obtain the necessary permission to connect to the water supply system.

In accordance with generally accepted standards, work on inserting into a water pipe can only be carried out by specialists with appropriate permission. The person who ordered this service can only save on digging and filling the trench with his own hands, as well as on auxiliary work that does not require permits.

There are some situations in which inserting a pipe into a water supply is prohibited:

connection to the main line without installing a meter;
lack of connection to centralized drainage;
larger diameter of the branch branch than that of the main pipeline.

Construction of an inspection well

To simplify the insertion process, you can build an inspection well about seventy centimeters wide.

Such a well will be enough to place shut-off valves in it and perform the necessary manipulations to connect to the water supply. Such a structure will make it easier in the future possible holding home system repair.

To make a well digging a foundation pit the necessary parameters, the bottom of which is covered with a ten-centimeter layer of gravel. To form reliable foundation the resulting “pillow” is covered with a sheet of roofing felt. A concrete screed is poured on top.

After no less three weeks over a hardened slab mine walls are laid out. For this purpose, bricks, reinforced concrete rings or cement blocks can be used. The neck of the pit is raised flush with the surface.

When building a well in an area with frequently rising groundwater, you should ensure it is waterproof. It is most convenient in this regard to use a ready-made plastic container, which is attached to concrete base. Top part covered with a plate with a hole for installing a hatch.

Water pipelines are made of several types of materials: plastic, cast iron or steel. It is worth paying attention to each of them.

Connection to plastic water supply

When working with a plastic pipe, after determining the insertion location, the area is prepared. For this purpose, the surface of the future puncture is carefully processed to get rid of paint.

To the cleaned area with bolts attach the saddle clamp with terminals to be able to connect the welding machine. If on plastic pipe an electric-welded collapsible clamp is installed, the vertical and direct-flow pipes are initially disconnected.

At the point of its connection to the main line hole is drilled with help special equipment. The drill is inserted exclusively at this point to further block the water flow with a shut-off valve.

To ensure the joint is tight, a pad is used during the drilling process. If the insertion is made with a welding machine, the hole is made when the surface has completely cooled.

The new pipe is attached to the flange located on the valve. A clamp is mounted over the connection point, which soldered with a welding machine to the highway. A tap can be screwed to the hole in the clamp.

This manipulation is optional, but it improves functional characteristics new pipeline branch. In the future, if the need arises to stop the flow of water, it will be enough to just turn off the tap.

Working with cast iron pipes

When connecting a solid cast iron pipe to a water supply system, follow a certain sequence:

Working with cast iron pipes requires the use of several drill bits. They should have Built-in carbide cutting inserts. It is important to prevent possible overheating of the equipment, which can be avoided by wetting the cutting parts with water.

Cast iron is a fairly brittle material, so drilling must be done at low speeds and with minimal pressure for equipment. When removing a power tool from an opening, it may be sprayed with water. Therefore, a protective rubber screen should be installed between it and the cartridge.

If it becomes necessary to use a saddle clamp, to ensure a tight fit to the pipeline, it is necessary use the rubber seal. It can also be equipped with a special machine consisting of a locking bolt, a flushing tap, a handle with a ratchet and a shaft with a drill. The structure is framed by a metal casing with a guide sleeve necessary to facilitate the drilling process.

Installation of steel pipe

Pipes made of steel are characterized by their rigidity and simultaneous plasticity. Their installation can be carried out in a manner similar to inserting polymer analogues. When working with them, you must follow a certain sequence of actions:

Upper layers of the highway drilled using a hammer drill, and the remaining few millimeters are worked out manually.

Required materials when connecting to the central pipeline

Depending on the material of the water pipe, it may be necessary to use certain additional elements equipment.

To cut into a plastic pipe with a pressure of about 1.6 MPa, you need to use ring saddle clamp. This device has a spiral with a cutter used to form the hole. When purchasing a saddle for tapping into a water supply system, you should pay attention to the barcode marked on its body. It ensures the accuracy of the parameters of the hole being created.

For tapping into cast iron or steel pipe need to buy saddle clamp. This device is divided into two parts, which are tightened with bolts during operation. The metal saddle is equipped with a locking plate.

To the pipeline it mounted with bracket. Insertion into a steel water supply can be carried out without the use of a saddle by welding the pipe, however, with this method, the diameter of the main pipe matters, which must have a large cross-section.

Today, thanks to their reasonable price and excellent quality, they have gained great popularity among specialists. saddles with built-in valves and cutter. They are usually used when inserting into a pipeline under a pressure of no more than sixteen bar.

They are equipped with a coupling, which allows installation with a welding machine. The most attractive feature of such saddles is their good resistance to corrosion processes, extending their service life to fifty years.

The final stage of the tie-in

The final step in any pipeline connection process is to test the connected system components.

For this purpose, in the created new branch water is supplied under pressure, and from the other end of the pipe the accumulated air is released using a tap placed on it.

After checking all elements of the water supply system for leaks, you can dig a trench, laid from the highway to the connection point with the home network.

During the installation of a water supply system, situations sometimes arise when it is necessary to connect the system to the main line. Many home owners find this task difficult. But, knowing some tricks and the algorithm of actions, the insertion does not present any particular difficulties. This article will tell you how to tap into a water supply system under pressure with your own hands.

First we need to give the concept of a main water supply system. So, the main water supply system is a supply system through which the resource from the water intake reaches consumers. Sometimes there is an urgent need to connect a tap inside the house or on the site. For example, you need to connect a tap to the main water supply or household appliances additional plumbing fixtures. To connect summer kitchen

or a bathhouse to a new building may require a plumbing connection. If we're talking about

about connecting the water supply to the central main, you must remember that you must first obtain permission to connect to the water supply and only then begin the work. Otherwise, fines cannot be avoided. There is nothing difficult about obtaining permission. You just need to contact the water supply organization.

The insertion process can be divided into two types:
Under pressure. A pressure tap into the water supply system is carried out when there is no way to shut off the water. For example, you need to connect to the water supply network dishwasher. Either erected new cottage, and you need to run a water supply to it. Or the old water supply is clogged and needs to be replaced. In all these cases, it is often not possible to turn off the water. And the only way out is to tie it into the main line under pressure.

Features of the sidebar

To ensure that inserting a water pipeline into an existing network does not cause much damage, you need to know the specifics of this process. First you need to decide on the pipe material. Most modern water pipes are installed from plastic, metal or. Cast iron options also occur, but much less frequently.

To insert into the main line, you need to make a hole and insert shut-off valves. As a rule, a clamp is used for tapping into a water supply under pressure.

The pipeline connection is most often made in the inspection well, which is located closest to the house. Water pipes are being laid and connected to the central main. To increase water pressure, use a special pump equipment. If it is not possible to crash into the central highway, you will have to equip it yourself. There is no need to skimp on equipment. Since the durability and reliability of the design depends on the quality of the products used. Therefore, if you need to buy a clamp for tapping into a water supply system, you should choose products from well-known companies.

The technology for drilling a highway involves following the rules:

Insertion into a metal water pipe

Let's say you need to make an insertion into a metal water supply system. In this case, you will need a saddle clamp with drilling. The pipe must first be thoroughly cleaned of rust and any contaminants. Both pipes are attached with bolts. To ensure that the clamp fits tightly to the pipe, rubber seals are used. After securing the clamp with a drill, make a hole. When water appears, unscrew the drill and close the plug with a special screw. Sealant is often used to threaded connections plumbing to avoid leaks.

Some specialists use an ordinary drill, a water supply hose and a clamp to cut pipes under pressure.

The essence of the method is that a prefabricated plastic clamp is installed on the pipe and fixed. The valve is screwed onto the second outlet from the tee. A drill with a large diameter is installed on the drill. A hole is made through the tap at high speeds. Water enters the hose through the tee. And this gives the master enough time to complete the drilling work. The tap is then used as a spout to collect water. The outlet with the hose is muffled and the tap is turned off.

If the line is made of plastic or cast iron pipes, the system is under pressure; insertion is carried out using clamps. IN cast iron pipe the insertion must be done carefully. After all, the material has low ductility and can burst if you apply a lot of force.
The technology for tapping into the water supply is presented below:

Sometimes cast iron is used to prevent leakage. To get rid of the leak, you need to put a rubber gasket on the pipe and press it carefully with half-clamps. This is suitable if the leak area is small.

But for professional leak elimination, special fittings without fittings and rubber gaskets without holes are used. Sealing material should be placed at the leak point. Apply the seal ring and tighten the bolts crosswise.

Water supply to a house from a well

Sometimes connecting a private house to the central water supply is impossible. But providing water is essential to making your home comfortable. Therefore, it is worth thinking about how you can solve the situation. The optimal solution in this case would be to install a water supply network from a well or well. An ordinary well is preferable. With its help, you can equip a reliable and practical water supply system.

Knowing how to enter the house, you can create the most comfortable living conditions. You can make a water supply from an existing well, or you can equip a new one. The main thing is that the diameter of the well is at least 0.7 meters.

If you plan to create a new structure, it should be dug next to the house and lined with reinforced concrete or brick.

If the underground level groundwater above one meter, it is advisable to purchase a plastic waterproof well.

An insertion is made into the existing water supply system, and a shut-off valve for the water supply system is installed: a valve or gate valve. Placed in the well at the connection point with external system water supply pipe insertion unit. This water supply unit is used to shut off the water supply while repairs are being carried out. The resulting structure should be covered on top with a slab with a hole for the hatch.

It must be remembered that before proceeding with the installation of water supply, you should decide on the method of water intake. It is important to resolve the issue with dumping Wastewater. To lay the pipeline, you need a trench for the water supply, which should be dug below the freezing depth of the soil. Pipes should be laid on a leveled trench bottom. Leveling can be done using sand. If the option with trenches is somewhat difficult, then the water pipes should be insulated.

It is also important not to forget to create a water supply inspection well, which is the most important element the entire system. It makes the functioning of the water supply network more reliable and efficient. Inspection wells allow you to monitor the entire process, as well as remove all blockages that occur in the structure.

Thus, the water supply at home is an important component for creating comfortable conditions accommodation. You can organize a water supply by tapping into a water supply system. Sometimes wells and wells are used as a source of water. It is not difficult to equip a water supply system, the main thing is to follow the rules.

It may well happen that it is urgently necessary to make an insert into an existing water supply system, for example, to connect it to a water supply system additional device(washing machine or dishwasher), or if you built a new one a private house, you need to supply water to it, or the old supply is clogged and requires replacement. But it is not always possible to turn off the water. There is only one way out - tapping into the water supply under pressure with your own hands.

The essence of the process

In order for intervention in a water supply system that is filled with water under pressure to cause minimal damage, you need to figure out what to do and how to do it. Let's start with the pipe material. Modern water pipelines are installed from metal, plastic and metal-plastic pipes. Cast iron pipes are less common.

In order to cut into such a pipeline, a hole must be made in it. It goes without saying that a stream of water will immediately “burst” out of it. Therefore, it is necessary to provide for how to quickly and securely close this hole, but so that it is possible to subsequently attach a continuation of the branch to it. In other words, after making a hole, a shut-off valve is cut in with the possibility of attaching to it additional pipe. Basically, tapping into a water supply system under pressure is done using special clamps. The design of these devices depends on the material of the pipe.

Tap-in technology

Let's consider from a practical point of view how to make a hole in a pipe with water. There are two general rules when tapping into a pipeline:

The pipe being cut into must be smaller in diameter than the pipe in which the hole is being made.
The drill diameter must match internal diameter embedded pipe, which, in turn, must be smaller diameter than the main line pipe.

Note! When performing tapping work, all safety precautions must be observed.

If you need to cut into a metal water pipe, you will have to use a tapping saddle clamp with drilling. The saddle clamp is called because it Bottom part is a semicircle that looks like a saddle. There are several varieties of such clamps. Before installing this device on the pipe, it must be thoroughly cleaned of dirt and rust (if any). In addition to the “saddle”, the clamp has in the upper part stop valve with hole for drilling and drill bit. Both parts on the pipe are bolted to each other. The clamp fits tightly to the surface of the pipe using sealing rubber bands. After securing it with a drill, make a hole until water appears. Then the drill is unscrewed and the plug is closed with a special screw so that water does not flow out of the pipe. In the future, such a clamp can be used as a shut-off valve. You can also use a clamp with a valve already screwed into it.

After the hole is ready, the drill is pulled out and the valve is closed. Now you can carry out other work on installing the plumbing. You can also attach a special machine to a simple metal clamp, the main elements of which are a handle with a ratchet, a locking bolt, a shaft with a drill at the end, and a flushing tap. All this is enclosed in a metal case and attached to the clamp using rubber seals. The guide sleeve allows you to drill in a given direction. It is used to drill metal and cast iron pipes.

To drill a cast iron pipeline under pressure, bimetallic crowns and clamps are used special design. The nuance of working with cast iron is that:

It is necessary to work with light pressure. Cast iron is a brittle metal and does not work well under compression and tension;
pre-clean the surface of the pipe from a special layer applied to the surface to prevent corrosion;
Do not allow the crown to overheat;
should work at low speeds.

If you want to cut into a plastic pipeline, it is better to use an electric welded saddle clamp. It is made of special plastic, equipped with a heating coil and a drilling mechanism. There is a barcode on the seat body that allows you to accurately enter the necessary parameters: welding and cooling time, etc. The clamp is bolted to the pre-cleaned pipe. Using a special welding machine the spiral is heated and the outlet is welded (there are terminals on the clamp for welding connection). Next, an hour after cooling, a hole is made with a special cutter and the shut-off valve is screwed on.

Metal-plastic is used mainly for distributing water around a house or apartment. Consequently, the diameter of the pipes is small. If there is no inlet valve and it is not possible to shut off the water with the help of special services (housing office, water utility), then to supply water to an additional point you will have to cut in under pressure. The use of clamps in this case is not advisable due to the small diameter of the pipe. How to make such a sidebar? Very simple. It is necessary to prepare a water container, a floor rag, a tool, a valve and special fasteners. The pipe is cut. The end from which water flows is lowered into a container of water. A nut and clamp are put on it. Then a valve is inserted into it open position, which is clamped with a nut. Then, after closing the tap, you can continue installation.

Peculiarities

All proposed methods of tapping into a water supply system under pressure require certain qualifications, experience and the availability of special tools. After all, you need to act quickly to prevent a large water leak. If the insertion occurs in main pipeline, which is located underground, the water pressure is quite high and taking such a “shower” even in summer is not very pleasant. Moreover, the work is being carried out hand tools, for safety reasons, power tools are not used. In addition, if you independently insert into the main pipeline, you will have to obtain permission from the water supply organization - the owner of the pipeline. And this involves a certain amount of paperwork, a waste of time and nerves.

When it is necessary to cut into the supply pipe in the middle apartment building, then slowness will lead to flooding of the lower floors.

Of course, no one can forbid a man to do such work himself, but for this it is necessary to have a set of certain tools. Buying them for a one-time job doesn’t make much sense: the tools are expensive, and after cutting in they will simply lie in the pantry or garage until the next time. Therefore, judge for yourself how possible it is to independently tap into a water supply system under pressure. The decision, of course, is up to the individual, but it is most reasonable to invite a specialist with experience in performing such work to perform such an insert.

Video

This video shows an insertion into a polyethylene pipeline using a Poly16 Plus saddle with a cutter.

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