How to crash into a water pipe in the country. How is the tie-in to the main or secondary water supply? Working with polymer reinforcement

A private house or cottage throughout the entire period of operation is rebuilt, improved, equipped. Sometimes these manipulations are forced, due to the wear of any structure or system, and sometimes there is a desire to upgrade them to increase comfort in the house. But, no matter what the reasons underlie the process, sometimes such an operation as tapping into a pipe without welding becomes relevant. For example, without this procedure, it is impossible to organize an additional sewer drain when installing a washing machine, or vice versa, creating an additional water intake point for connecting a household appliance to a water supply system.

Outlining the range of tasks

If you need a tie-in into a water pipe, for example, then the most logical at first glance would be a very simple way:

  • The pipe is cut.
  • A tee is welded or inserted.
  • Connected to a tee.

If you have to deal with a plumbing or heating pipeline that is still "Soviet-style", that is, metal, then such a manipulation of the "head to head" type is a very effective way to solve the problem. But such pipes in practice are becoming less and less common, they are ruthlessly and everywhere replaced by systems made of plastic and its derivatives. Therefore, today the question of how to crash into a plastic pipe will be more relevant.

Naturally, this work is not as simple as it seems at first glance, although, on the other hand, a non-professional can also handle it if armed with our advice, and also shows diligence and will. And for starters, you need to understand the amount of work that you will have to face.

Possible problems when tapping:

  • The pipe is sawn and in the right place a piece is cut out very precisely in size for the tee. In this case, it should be borne in mind that the pipe can be very close to the surface of the wall, and it can also be walled up halfway into the wall.
  • You may need to dock on the principle of "father-mother". The end of each pipe is equipped with an extension - a socket, in which there is a rubber seal. It is in this socket that you will have to insert another pipe.
  • Also, most likely, you will have to replace one whole pipe with two smaller ones. And between them it will be necessary to install a pipe section with a branch pipe through which the connection will be made.

Tapping into the water supply with a pipe

In fact, the answer to the question of how to crash into a water pipe can be very simple. One way of this process does not require cutting the pipeline element at all. To begin with, it is purchased, in any specialized store, a piece of pipe with a pipe, of course, of the same diameter as the water pipe.

Tapping without cutting - a few simple steps

A branch pipe must be cut out of the purchased pipe section, but in such a way that an element of the “half-pipe” type is obtained at its end. It is he who should provide a reliable overlap of the place of the future tie-in. Simply put, a second wall of the pipe should form, as it were. A hole is drilled in a predetermined place, the diameter of which must correspond to the diameter of the nozzle.

Any non-drying sealant, for example, "Body 940", is applied to the entire inner surface of the flange in an even layer. You should look for it in car dealerships, in car cosmetics departments. The area around the hole is lubricated with the same composition, but you do not need to reach the hole itself by about 1 cm.

Further, when mounting such a curved flange on a pipe, I will have to use such a fastener as a pipe clamp. Rather, you need two of them to pull the edges on both sides. Tighten the clamps very carefully, but so that the sealant begins to squeeze out from under the flange. Residual grease is removed.

Attention! If a tie-in is made into a polyethylene pipe of a water supply (sewerage) where a slight pressure is fixed, then the use of clamps is an optional condition. You can flange, using a wide electrical tape, just "bandage".

There are times when a more rational solution would be to use a ready-made tee with a large cross-sectional size. At the same time, it is necessary to cut off that section of the pipe where there is no branch pipe. In this case, the general procedure will include cutting the pipe longitudinally, drilling a hole in the remaining segment, and then installing a branch pipe to it.

Ready-made special equipment for tie-in - nurses and adapters

The reason for tapping into the general house sewerage system can be the most ordinary event - installing an additional sink, installing an additional tap, connecting a dishwasher or washing machine, etc. Anyone can cope with such tasks at any time and competently if they use the special structural elements that are available now on the market - adapters, flanges, etc. Thanks to these simple and affordable adapters, the optimal solution can be found in each specific case. Moreover, the tie-in into the PVC pipe will be performed without special material and time costs. There are several ways to tie into the sewer system using special elements:

  • Introduction of adapters. If you need to crash into a pipe with a diameter of 100-110 mm, then an adapter with a diameter of 50 mm is installed.
  • Using sidebars. When it is necessary to work with pipes with a diameter of 32-40 mm, elements of 12-22 mm in size are used, equipped with a plastic fitting.

Tapping without pressure

The tie-in into the HDPE pipe using the purchased ready-made adapter will be performed with high quality if only a few consecutive steps are taken:

  • The water supply to the sewerage is blocked.
  • A hole is drilled with a crown of a suitable size, put on a drill.
  • An adapter is put on the pipe and tightened with bolts.
  • If the tie-in is without bolts, then the pipe surface is first degreased, a special tool is applied and the nut is tightened.

Tapping under pressure

There are situations when it is necessary to tap into a pressurized system in operation. Here, special pipeline fittings are used - a saddle for tie-in.

Important! A saddle for a pipe is a part of the pipeline, which consists of 2 parts that compress the pipe from 2 sides. In everyday life, a saddle is often called a “collar for a tie-in”.

With the help of this part, a quick and reliable insertion of a secondary branch from the main pipeline of drinking or technical water supply systems, sewer systems, drainage and other systems, the pipelines of which are made of polyethylene pipes, is performed.

Saddle will help to crash into the pipeline under pressure

In this case, the outlet pipe can be rotated 360 degrees relative to the pressure pipe. The saddle itself is made from the same HDPE material as the pipe. Such a clamp is welded to the pressure pipeline using electrofusion welding.

In this way, a tie-in is performed into existing pipelines in which a pressure of up to 10 bar is created - gas, and up to 16 bar - water. At the same time, the technology does not imply the presence of leaks or the formation of chips. The resulting connection is unattended and permanent. It is not subject to corrosive influences and will serve at least 50 years.

When performing a tie-in into a pipe of any complexity, it is important to remember that a well-done job will avoid costly repairs to the entire system, and any branch will be installed without much hassle.

There are often cases when it becomes necessary to expand the water supply system in order to make it possible to install plumbing equipment. It may also be due to the need to install an additional circuit. In any case, such actions should be correlated not only with safety, but also with a certain order of work. In this article, you will learn how to crash into a water pipe.

The characteristics of the main water pipeline are as follows: the laying of such a pipeline is carried out on the main streets, pipes with a diameter of 100 to 2000 mm are used. To implement the insert, one of the two possible options for executing this task is required:

  • welding- a thread is welded, which is necessary for the installation of a crane, which is used to connect a pipe going to a particular house;
  • clamp- used when there is no possibility of blocking the flow of water.

The depth of the line determines the location of the tie-in. If the main pipe is at a decent depth, then the tie-in is made in its upper part, and otherwise - with a branch to the side. Let's take a closer look at the mentioned options.

welding method

When using this method, it is advisable to first turn off the water supply, and then proceed to a direct tie-in. Why you need to burn a hole in accordance with the diameter of the thread, which then needs to be welded.

At the same time, the process of such work does not always look exactly like this. In some cases, tapping into a water pipe is carried out without shutting off the water supply. This can be explained by the elementary absence of shut-off valves or by the fact that such fittings exist, but they are old, which does not allow them to be used for their intended purpose. In practice, the following set of actions is expected:

  • the place of the tie-in is selected, where the thread is welded;
  • then a full bore valve is screwed on;
  • a hole is drilled through the installed faucet, ensuring that the perforator is protected from water by a rubber or cardboard screen;
  • at the end of the previous process, the drill bit is pulled out sharply, and the tap closes.

Drilling should be done at high RPM, as this reduces the chance that the drill will jam. This tie-in method is problematic, due to the high water pressure in the main water supply. If the pressure exceeds 5 atm., Then it is necessary to refuse to independently carry out such work. In this case, you should contact specialized organizations, and not take the initiative.

Clamp

The option of using an overhead clamp, if it is necessary to tie into the line, is quite suitable when working with pipes made of different materials: steel, polypropylene, polyethylene, etc.

In practice, such a tie-in has the following procedure:

In the same way, a tap is made into a water pipe without turning off the water, but only if the pressure does not exceed 5 atm. To a greater extent, this method is suitable when working with a polyethylene pipe - a simpler drilling process. When the pipe and clamp are made of metal, there is no need to fix the clamp. As for the polyethylene pipe, this is not the case, which is explained by the presence of a large linear expansion of this product. This forces the use of epoxy to seat the yoke.

Insertion on a secondary section of the water supply

So-called secondary pipelines branch off from any central highway, supplying water to neighboring streets. The pipes of such wiring are mainly polyethylene, they differ in a smaller diameter - an average of 50 mm. Usually, taps are installed at the branches of secondary pipelines, the overlap of which simplifies the work of inserting pipes, which is available using two methods.

First:

  1. A trench 2 meters long is dug along the pipeline. This implementation of the problem is used mainly in relation to pipes of small diameter (up to 50 mm).
  2. The pipe is cut.
  3. A tee is mounted on the pipe, which can be welded if the pipe is metal, or simply fastened with union nuts if it is polyethylene, for example.

Second:

  1. An overhead clamp is being installed, the factory samples of which are equipped with a thread necessary for installing cranes.
  2. The faucet turns on.
  3. A hole is drilled, which is done directly through the crane. This can be done without shutting off the water supply, since the secondary pipelines are characterized by low head pressure.

In the place where the insert was made, if possible, it is necessary to arrange a well. For this, a concrete ring or a used brick as a base is suitable, followed by closing the structure with a lid with a built-in hatch.

Insertion into a metal plumbing

When working with a metal pipeline, it is desirable to use a saddle clamp, which has several varieties. Immediately before mounting the clamp, the pipe must be put in order, that is, it must be cleaned of dirt and rust, if any. The design of the saddle clamp involves the presence of two semicircular parts, bolting and a shut-off valve with a hole that is designed for drilling.

The tightness of the clamp to the water supply is ensured by special rubber seals that guarantee the tightness of such a connection.

The procedure for tapping into the pipeline:

  • fix the clamp on the surface of the pipe;
  • drill a hole;
  • install the plug in the form of a screw intended for this.

It is also possible to use a clamp, supplemented with a valve. Here the order is the same: a hole is made, the drill is removed and the valve is closed.

Along with this, there is a tapping machine, consisting of a handle, a locking bolt, a drill mounted on a shaft, and a flushing valve. All these elements are located inside a metal case, attached to the clamp using a rubber seal. The use of this device makes it possible to produce a comfortable tie-in into pipes.

Insertion into a cast-iron plumbing

Drilling of cast-iron pipes, which are part of a pipeline that pumps water under pressure, is carried out using special clamps. These products differ in some design features and the use of bimetallic crowns. Such a tie-in should take into account certain nuances:

  • cast iron is brittle, therefore, when drilling, it is necessary to apply a small degree of pressure;
  • before carrying out work, the layer applied to prevent the appearance of corrosion should be removed from the pipe;
  • drilling should be done at low speeds;
  • excessive heating of the crowns should not be allowed.

When the compacted layer is removed, it is required to install a collapsible saddle where the tie-in is supposed to be. In this case, it is necessary to seal the junction with rubber pads. The drilling process itself is carried out using a carbide crown.

Tapping into a cast iron pipe is based on the following steps:


When inserting into a cast-iron pipe, it should be remembered that the saddle pipe must be installed so that its slope in the direction of the house is 2 degrees.

The saddle clamp makes it possible to tie into the water supply from plastic pipes without reducing the pressure. Such a clamp is created from the appropriate plastic, and its equipment includes a drilling mechanism and a heating coil. To ensure welding accuracy, a special bar code is applied to the clamp body. This tie-in method is used for pipelines operating at pressures up to 1.6 MPa.

The service life of the saddle clamp can reach up to 50 years, as it is resistant to corrosion.

Before tie-in, the pipe is thoroughly cleaned, and then a clamp is attached to it, which has terminals that allow you to connect a welding machine, which makes it possible to weld a branch by heating the spiral. A saddle equipped with a cutter and a valve also finds its application:

Installing a pipe on a water pipe using welding is a job for professionals. At the same time, you can independently install saddles on pipes made of cast iron and polymers, if the water supply is previously turned off. When tapping into a water pipe under pressure, the existing safety rules governing this type of work should be followed.

Permissive documents

Tapping into the water supply on your own site does not imply obtaining any permits. In this case, it is quite enough to make appropriate changes to the plan of the water supply system. The situation is quite different if you want to make a tie-in into a centralized water supply pipe. If you do this on your own initiative without obtaining permission from the competent authorities, this may lead to penalties against you. Such actions should be carried out only on legal grounds.

Also, such work requires some care, since damage to the water supply system can cause a serious accident, which will lead to the need for restoration work, the cost of which, as well as fines, will have to be paid by the culprit of the event. The tie-in to the main line for the purpose of organizing a diversion must be consistent with the precautions at each stage of the work.

The cost of tapping into the water supply

The price tag for a polymer clamp is 100–250 rubles. In this case, a fitting installed on a pipe with a diameter of 32 mm will cost 100 rubles, and for 75 mm fittings - 250 rubles.

The cost of a stainless steel clamp, supplemented with a flange outlet, is 9–10.5 thousand rubles. The scope of delivery of this equipment includes a rubber gasket and 6 studs that provide the ability to fix the staples.

Electrowelded saddles manufactured by the Italian company Eurostandard Spa, having a diameter of 40–250 mm, can be purchased for 25–80 euros. As for the cost of work, the average price tag for services of this type ranges from 2 thousand to 2.5 thousand rubles.

Before draining from an internal or external water supply, it is necessary to purchase auxiliary parts and tools. Their choice is made taking into account the type of pipes from which the water supply is laid. This takes into account the operating pressure in the system.

The need for insertion into the system inside the facility or on the site arises when an external tap, plumbing equipment and household appliances are connected to the network. The procedure for cutting into the main network is carried out in order to connect a new facility to the water supply.

The principle of insertion into the system

Before starting installation work, it is recommended to coordinate them with the water utility and the local administration. If there is no central sewerage on the land plot, tapping may be prohibited. But in the presence of a septic tank and all established sanitary standards, it is possible to obtain such a permit.

To join the pipes, a special well is equipped. If the water utility prohibits tapping into an existing water supply, then the object is connected to a nearby well. But it must be in working order.

The process of tapping into an external highway is carried out using the following technologies:

  • using fittings that are installed on the pipe during installation;
  • fixing the outlet branch of the system if there is no pressure in the system;
  • the use of a fitting that is fixed to the pipe. Such a connection does not require prior shutdown of the water supply in the system.

Welding

Experts believe that the easiest way to tie into a steel external network is welding. A prerequisite for tie-in is the ability to turn off the water supply through the system.

Autogenous make a hole of suitable diameter. Then the pipe is welded, the valve is mounted. The last element of the system is covered in the process of further work. If the tie-in is completed, it will be necessary to restore the anti-corrosion protection.

If the pipeline is laid from polyethylene pipes, then welding work is not carried out. Taking into account the diameter of the consumable material, the clamp is fixed.

Installation of a branch pipe without blocking the main line

Tapping technology without changing the pressure is an efficient and productive technique. But before doing it, you need to consider:

  • dismantling of insulation and protection of the surface in the area of ​​pipe drilling. At the same time, the diameter of the material with which water will be discharged is less than the parameters of the main pipe;
  • fixing additional elements of the network. A valve with a device for making holes is fixed to the flange;
  • if a steel product is used, then the clamp is replaced by a pipe that is welded. A valve with a cutter joins it. The completed seam is additionally welded;
  • the next step is to install the cutter of the desired size. If the hole is ready, the cutter is removed;
  • valve closure. If the tie-in is completed, it is necessary to restore the anti-corrosion coating, insulate the pipes.

Step-by-step tie-in to the internal network

If it is necessary to crash into an old steel pipeline, then the main method is to equip a branch by welding a tee. This will require a lot of work.

If a pipe made of plastic or its derivatives is connected to the main line, then you will need to cut out a section of the pipe, taking into account the size of the mounted tee. But when doing such work, there is an inconvenience due to the close distance between the network and the wall of the building.

A simpler method of mounting a branch is considered to be a pipe tie-in with a curved flange. A consumable with a branch pipe, the diameter of which corresponds to the size of the pipeline, is preliminarily denied. The segment is cut lengthwise so that its part with the branch pipe fits snugly on the pipeline as its other wall.

The previous workpiece is superimposed on the branch pipe with a hole. The place of fixation is treated with a sealant. The resulting flange is pulled together with 2 clamps on the sides relative to the pipe. Subsequently, the rest of the network is fixed to the branch pipe.

On the modern plumbing market, you can buy adapters, special saddles and other devices with which the insert is made (regardless of the conditions for laying the network).

If a saddle is used, the pressure in the system does not change. The saddle is a collar made of 2 parts. With the help of bolts, these parts tightly compress the consumable from 2 sides. A crane is fixed to the saddle with a special connection.

If the hole diameter is not more than 1/3 of the pipe diameter, then it is drilled with a special tool. He time joins the faucet. If the hole is ready, the valve closes, the device is dismantled. A drain pipe is mounted to the installed tap.

To connect the house, a saddle with a valve and a built-in cutter is used. For its installation, socket welding is required. A similar product is used for pipelines, the pressure in which does not exceed 16 bar. During installation, the line does not overlap, and when drilling pipes, there is no leakage, no chips are formed. The connection does not corrode and has been in operation for more than 50 years.

Punch methods without welding

It is possible to cut into the main pipeline without using welding. This technology is used by many specialists, since welding work requires compliance with safety rules. In this case, special equipment is required for welding. Welding work is considered complex and time-consuming.

From non-welding tie-in technologies, there are:

  • installing a collector is the best solution for a large private house. A compact collector system is also installed in the apartment. A water pipe is installed to the inlet of such a system. The collector has several outlets. Their number depends on the system model. The pipeline connects to any outlet. Adapters are used to fix the hoses;
  • installation of a tee - this tie-in method is used if a single outlet is provided. The water supply connection is pre-untwisted, and then a tee is mounted in this place. The pipeline is expanded or shortened by threading;
  • the process of cutting the pipe itself - the technique is optimal if there is no connection from the outside. To perform cutting, a grinder is used. A pre-threaded tee is installed;
  • the use of a thin pipe - a hole is prepared in the system, on which a sealant, clamp is fixed. Lag screws are used to mount the outlet.

Arrangement of a plastic and metal network

To enter the plastic system, you will need a piece of consumable material, a pipe of the appropriate diameter. At its end, 1/2 of the pipe is preserved, due to which the function of closing the tie-in points is performed.

A hole is made in the line with the diameter of the pipe. It is treated with a sealant. The flange is mounted on the pipe, and on the sides it is tightened with clamps until the hermetic substance comes out. Its remains are removed immediately. If the above work is carried out in a low pressure system, clamps are not used. To fix the flange, you will need a wide electrical tape.

Insertion into the water supply from metal pipes

  • the flange is made independently from a pipe, the inner diameter of which coincides with the diameter of the laid line. Compliance with this condition will provide the necessary tightness for the entire system;
  • you can use a tee with the desired diameter. To do this, a part of the pipeline without a branch pipe is removed from the part. Then the consumable is cut, a hole is made. To fix the pipeline, welding or a branch pipe is used;
  • experts advise welding the flange to the pipeline. Welding work is carried out around the entire perimeter of the product. The welding technique can be replaced with a sealant and a clamp.

Using a special device, holes are made in consumables under pressure. The principle of the method under consideration:

  • removal of insulation;
  • pipe surface cleaning.
  • installation of a flange on the supply pipeline with its subsequent fixation with a clamp;
  • connecting the valve to the flange;
  • installation of a drilling device;
  • cutter insertion through the valve;
  • hole cutting;
  • removal of drilling equipment;
  • blocking the water supply from the pipe.

According to the above technology, it is possible to make a tie-in without welding into a steel pipe. This technique is somewhat different from the technology of tapping into a polypropylene product without using welding. Therefore, before starting installation work, it is recommended to determine the type of consumable used. Its calculation is made with a margin. Upon completion of the work, the system is checked for leaks. In case of violation, additional repair work is carried out. They can be done independently or with the help of specialists. If the system is sealed, the line is ready for operation.

Any home, public building, business or private apartment may be in dire need of an additional outlet from an existing internal or main water supply. To a large extent, this process is determined by the material kill and other elements, system pressure, operating conditions, and so on.

The sequence of work execution depends on the chosen method of solving the problem. dachas.

Why might a tie-in be required?

If we are talking about the main trunk line, then this may be a serious need to connect connection of the new building to the existing water supply.

If you need to connect to an internal water supply, it may be necessary to

to connect any device where cold water is needed, an outdoor tap or household appliances.

This approach allows you to reduce the cost of organizing water supply, possibly improve water quality and get more pressure. In this way, you can make as many tie-ins as you like even into a sewer pipe with your own hands ...

To do this, a neat tie-in of your water supply is made into an existing one in the right place, after which a pipe is laid to the house at a sufficient depth so that the ground does not freeze - from 1.2 meters.

If the pressure in the main pipeline is sufficient, then the installation of the pump is not necessary. It remains to think about joining the sewer line.

If there is a central sewer - no problem. Otherwise, you will have to solve the problem yourself.

It is also desirable to provide for the possibility of completely turning off the water, as well as draining it if the house is not used in winter.

If the system is outdated, with insufficient working pressure to provide the existing number of houses, which means that the stream of water from the tap will be very weak. Thus, you will have to take care of increasing the pressure with your own hands by installing a pump.

The unit is installed directly on the pipe, and it works automatically when using a crane.

Do not forget about the possible poor quality of water. For this case, additional filtration will be required, for which a water treatment system is installed.

Permission and approval

Tapping into the water supply must be carried out sequentially.

The first step is to obtain permission to tap into the water supply, since illegal tapping into the pipe carries financial and administrative responsibility. First you need to get a site plan, from which you can understand how communications pass underground.

The document can be obtained from the Federal Center for Registration of Land Plots.

This plan will be needed to apply to the district office of the water utility with an application. Additionally, you will need to present title documents for the site and the house.

The central department is obliged to issue technical connection conditions, which include:

  • pipeline diameter;
  • connection point;
  • other data that may vary depending on the purpose of the insert.

That's not all. These technical conditions and documents for the site and the house are submitted to the SES department. Additionally, an application is drawn up for obtaining an opinion on connecting to the water supply.

Of course, their project costs more than other organizations, but it will definitely pass the test. Therefore, the savings may not be appropriate.

Then the design and estimate documentation is registered with the SES. It remains to obtain permission from utility organizations to carry out land work where your water supply will be connected to the existing network.

Next, you need to find a team that will carry out installation work. You need to sign an agreement with this organization. And here it should be noted that an independent tie-in into a running water pipe under pressure and the installation of metering devices is strictly prohibited.

Even with all the permits and approvals, tie-in of your water supply to the existing network should be carried out exclusively by specialists.

The only way to reduce costs is to carry out those tasks yourself. types of work that do not require a license:

  • trench digging and backfilling;
  • sand filling;
  • other similar work not directly related to the tie-in (purchase and delivery of pipes, reconnect to the sewer network, for example y).

Unauthorized tapping into a finished plastic water pipe is fraught with considerable fines and subsequent problems..

After completing all the work, the water utility specialists must draw up an act of putting the devices into operation. It remains to conclude an agreement with the organization for the supply of water and payment.

Insert options

As mentioned above, there are two main options:

  • tie-in from the existing mains water supply;
  • tie-in to an existing water supply located inside the building.

We will analyze each option, considering the installation methods.

If there is no central sewerage on the site and it is not possible to lay a sewer line, tapping into an existing cast-iron pipeline may be prohibited. Therefore, it is important that there is a septic tank that meets the standards, which can allow you to get a permit.

To perform the docking, a concrete water well is equipped. If there is a prohibition on such an action, the procedure can be carried out in the nearest working well.

As a rule, the step of their location is 100 meters. By the way, this option can be cheaper than self-erecting a well.

Insertion into an existing waterway The wiring can be done in one of the following ways:

  • Applicable saddle for tie-in to the water supply. This part is actually a clamp for tie-in to the water supply. The connection takes place without the need to turn off the water supply in the water supply. The saddle is used for tie-in in an emergency way.
  • If the line is not under pressure, the outlet pipe is installed by welding.
  • The use of connecting fittings, which is attached to the main pipe.

Mounting by welding with clamp

Welding is the most time-consuming process for connecting an external steel water pipe. During work, the water supply must be turned off. An autogen is used to make a hole to which a threaded pipe or saddle clamp is welded.

Of course, now more and more often you can find pipes made of polyethylene, so the use of welding is not required. According to the diameter of the pipe, a metal clamp is made for tie-in (saddle clamp) with a branch pipe.

A hole is made on the pipe where the saddle clamp is fixed. The rubber gasket is placed under the clamp and the tie-in is sealed.

Installation without disconnecting the line

This is an operational option, although and more demanding on the details of the process.

The steps are:

  1. On z when drilling the pipe, the insulation must be removed, clean the coating. The diameter of the outlet pipe must exceed the size of the current one.
  2. A saddle clamp with a flange and a clamp is fixed on the pipeline. The valve is attached to the flange. A drilling device is mounted to it.
  3. If there is a welded pipe, you can weld a branch pipe to it, to which you can attach a valve, a device for a cutter. Next, the quality control of the seam is performed.
  4. Then the cutter is inserted through the valve and the flange gland. It is removed when the hole is drilled.
  5. The valve is closed, the drilling equipment is dismantled. After that, the anti-corrosion coating and insulation are restored.

Works on the internal pipeline

Now let's figure out how to make a tie-in to the water supply, for this you do not need to install a saddle clamp if it is inside the building. The traditional way is to install a branch using a welded tee.

At the same time, the work may require a lot of time and effort. It should be ensured that the tee will successfully crash into the pipeline, and this is very difficult.

Mounting with curved flange

In this case, cut the pipeline, install a saddle clamp not required. A piece of pipe with a diameter identical to the size under pipeline. Fulfilling the segment is cut along so that the half lies on the pipe, forming its second wall.

Next, a hole is drilled tie under the nozzle, the workpiece is superimposed. Sealant is applied. The curved flange must be pulled off, for this a clamp is taken and the tie-in is pulled together.

It should be ensured that the sealant protrudes from under the edges of the lining. Further, the rest of the pipeline is connected to the branch pipe.

The nuances of work (video)

Mounting with a saddle

The saddle allows you to cut into a plastic pipe without reducing the pressure on it. This device is a saddle clamp, consisting of two parts. Thanks to the bolts, the saddle compresses the pipe well on both sides.

Due to the thread or flange, a passage valve is attached to it.

A special drilling device creates a hole. The device is temporarily connected to the through-faucet. Then the crane is closed, the drilling equipment is removed. The installation of the outlet pipe to the faucet is in progress.

Now a saddle with a built-in valve and a cutter is often used. For this, a coupling is used in order to crash into the water supply by welding. This option is used for pipelines with pressures up to 16 bar.

Does not require installation stop the water supply. The saddle clamp turns out to be corrosion-resistant, capable of serving for fifty years.

The technologies used depend on the situation. For example, a tie-in to a cast-iron water supply occurs mechanically.

Thanks to this, the saddle clamp provides a strong connection, even if it is very difficult to crash into a cast-iron water pipe, as well as into a sewer.

Key nuances of tie-in work:

  1. First, the route is determined.
  2. trench mo can be dug with an excavator or by hand,given the required depth - more than the depth of soil freezing.
  3. How the connection can be made has been discussed above.
  4. It is necessary to make a slope of 2%.
  5. Valves are placed before and after the meter, which can be installed either in the well or indoors.
  6. It is necessary to provide a check valve, test and adjust. The water flow is regulated by a valve.

To avoid the need for re-piping, after blowing initially entrust the work to professionals. Previously, you can call several organizations to find out how much a tie-in into a cast-iron or other water supply system costs, what the price is and how many options there are.

How much the cost of tie-in to the water supply will cost depends on the working conditions, network features, materials used and other nuances. The standard price of a tie-in to the water supply is 1000 rubles and more (for 1 point).

The most affordable way to provide a house with water supply is to tie into an existing water supply, that is, into an existing central highway. However, not in all cases it is possible to shut off the water, which makes it necessary to tap into the water supply system under pressure.

Features of tapping into a water pipe

Before starting any work, it is imperative to obtain the appropriate permission for this. When performing an illegal installation process, there is a high probability of being held administratively liable.

According to the rules, for the tie-in, you should 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, for which you will have to visit the central department of the water utility. Specifications usually contain information about the connection point, data for the tie-in, as well as the diameter of the pipeline of the underlying pipeline.

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

However, in the future there is a possibility the emergence of a conflict with representatives of the vodokanal, who do not always approve such design developments.

Once you have received the necessary paperwork, contact the SEC 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, only licensed professionals. The person who ordered the implementation of this service can only save money 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 system is prohibited:

  • connection to the highway without installing a meter;
  • lack of connection to a centralized sewerage system;
  • a larger diameter branch branch than that of the main pipeline.

Manhole construction

To simplify the tie-in process, you can build a manhole about seventy centimeters wide.

Such a well will be enough to place shut-off valves in it and perform the necessary manipulations for connecting to the water supply. Such a structure will make it easier in the future to carry out possible repairs to the home system.

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

After at least three weeks over the hardened slab the walls of the mine are laid out. For this purpose, brick, reinforced concrete rings or cement blocks can be used. The mouth of the pit is raised flush with the surface.

When building a well in a site with frequently rising groundwater, make it waterproof. It is most convenient in this regard to use a ready-made plastic container, which is attached to a concrete base. The upper part is covered with a plate with a hole for installing a hatch.

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

Connection with plastic plumbing

When working with a plastic pipe, after determining the location of the tie-in, the site is prepared. To this end, the surface of the future puncture is carefully treated to get rid of the paint.

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

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

To ensure the tightness of the joint, an overlay is used during the drilling process. If the insert is made by a welding machine, the hole is made when the surface has completely cooled.

A new pipe is attached to the flange located on the valve. A clamp is mounted over the junction, which soldered by welding machine to the highway. A tap can be screwed to the hole of the clamp.

This manipulation is not necessary, but it improves the functionality of the new pipeline branch. In the future, if it becomes necessary to stop the flow of water, it will be enough just to turn off the tap.

Working with cast iron pipes

When connecting a solid cast-iron pipe to a water supply system, a certain sequence is observed:

Working with cast iron pipes requires the use of several crowns for drilling. 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 rpm and low pressure for equipment. When the power tool is pulled out of the hole, it may be hit by a jet of water. Therefore, a protective rubber screen should be installed between it and the cartridge.

If it becomes necessary to use a saddle clamp, for a snug fit to the pipeline, it is necessary use rubber seal. It can also be equipped with a special machine, consisting of a blocking bolt, a flushing cock, a ratchet handle and a shaft with a drill. The design is framed by a metal housing with a guide sleeve, necessary to facilitate the drilling process.

Steel pipe installation

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

The upper layers of the highway drilled with a perforator, 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 pieces of equipment.

To crash into a plastic pipe with a pressure of about 1.6 MPa, it is necessary to use saddle ring clamp. This device has a spiral with a cutter used in the formation of holes. When buying a saddle for tapping into the water supply, you should pay attention to the barcode marked on its body. It ensures the accuracy of the parameters of the created hole.

For tapping into a cast-iron or steel pipe, you need to buy saddle clamp. This fixture is divided into two parts, which are pulled together by bolts during operation. The metal seat is equipped with a locking plate.

to the pipeline bracket mounted. A tie-in into a steel water supply can be carried out without the use of a saddle by welding a branch pipe, however, with this method, the diameter of the main pipe, which must be with a large cross section, matters.

Today, thanks to an affordable price and excellent quality, specialists have gained great popularity saddles with integrated valves and cutter. They are usually used when tapping into a pipeline under a pressure of not more than sixteen bar.

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

The final stage of the tie-in

The final step in any pipeline connection process is the testing of the connected system components.

For this purpose, in the created new branch pressurized water supply, and from the other end of the pipe, the accumulated air is bled using a tap located on it.

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