When a private house is located away from the benefits of civilization, water supply is possible from its own well or well. In the event that the cottage is located within the city, or in the village there is a centralized water supply, it is advisable to connect to the main networks. Do not bump into a water pipe under pressure with your own hands. Work must be carried out by specialists of a licensed organization. It is possible to reduce the price of a tie-in into a plastic or metal water pipe by preparatory work on your own, but only a qualified plumber can make the entry to the highway, which is under pressure.
Connection documentation
To insert an existing network into the water supply, it is necessary to collect a package of documents. First of all, you need to contact the Federal Land Registration Center and request a copy of the site layout. The document must be approved, certified by the signature of the official and sealed. Specifications are issued by the territorial branch of Vodokanal. Technical documentation can be prepared by the design office, but the project of a third-party organization is subject to mandatory approval in the water utility. The specifications should contain the following information:
- exact place of the future tie-in;
- diameter of the main pipe.
Depending on the specific situation, the technical documentation should contain other data necessary for the performance of work.
After receiving the design documentation, the owner of the site must apply to the territorial office of the SES, justifying the need to connect to centralized water supply networks.
Unauthorized connection to the central water supply is an illegal action for which administrative responsibility is provided.
If an unauthorized tie-in is detected, the violator will be obliged to pay a fine, pay the cost of illegally consumed water and pay for the issuance of technical conditions and permission for the further operation of the highway.
Connection Denied
The applicant will be denied approval of documents in the presence of at least one circumstance:
- the need to connect to a large pipeline;
- lack of centralized sewage;
- the end consumer does not have water consumption meters.
If you do not need to connect to the highway, the installation of internal water supply networks of the site does not require permission. The installation of additional plumbing equipment in the apartment also does not require coordination with the above organizations.
Connection Methods
Making an insert into the riser of an apartment building or a private house, you can turn off the water supply and perform work in a dry system. Disabling the high-pressure main water supply system is not economically feasible, because a number of events need to be carried out:
- Reduce system pressure.
- Drain the water.
- Make a hole in the pipe.
- Secure the outlet by mounting a ball valve or gate valve on it.
- Connect the connected pipe section to the internal water supply system.
- Check all components for leaks.
- Pump water into the highway.
- Remove air from the system.
- Get to the design pressure of the pipeline.
This technique is used to weld a tee to an external steel network. With the help of an autogen, a hole is cut out, a pipe is welded and the valve is mounted. By closing the valve, you can restore water supply along the main line, and continue further work on connecting the outlet to the internal network.At the end of the work, as far as possible, it is necessary to restore the corrosion protection of the pipes.
Developed and successfully used the technique of tapping under pressure. Utility water supply networks are equipped with steel, cast-iron or polyethylene pipes; input can be made for any of the listed materials.
The first stage is earthwork. At the potential tie-in point, the soil is removed using an excavator. To exclude damage to the pipe, the last half a meter of land is removed manually. For the convenience of work, it is necessary to dig a hole with dimensions of at least 1.5x1.5 meters, so that it is convenient to stand and place the tool. Before preparing the installation well, it is necessary to dig a trench from the insertion point to the house in order to draw a water supply route.
Insertion Technique
A branch for HDPE pipes, PVC and metal systems can be made using a device called a saddle. This is a specially designed two-piece clamp. The sleeve joint must match the outside diameter of the pipe. The lower part, or saddle, tightly covers the pipe. The upper part has a flange or pipe that serves to drill the pipe and attach the branch. For large-diameter systems, saddles are available for insertion into a three-part water supply. There are no drawbacks to this type of compression fittings, and the list of advantages is quite large:
- low cost;
- reliability;
- quick installation;
- universality.
The gasket is responsible for the tightness of the product. The screed is produced by gradually and evenly tightening the bolts. This method eliminates the use of welding.
Before applying the clamp, it is necessary to remove the insulation and clean the area of the water supply from dirt and remove rust for a snug fit.
Types of fittings
There are several varieties of saddles that differ in design and method of mounting on the pipe:
- Crimp or compression. It looks like a regular clamp, the upper part of which is equipped with a threaded bend. They are used for plumbing or connecting watering systems complete with ball valves and compression fittings.
- Flanged. It is installed without welding. It is used for all types of metal pipelines; it has no differences from crimp models, with the exception of the flange hole. The main application is the industrial sector.
- Electric welding is used for tapping into polyethylene pipes. The part has a built-in spiral, which melts the pipe and fitting, forming a reliable connection. The cost of this product starts from a thousand rubles.
- Branch pipe. Fastens by means of electrodiffusion welding on the drained water supply system.
- The tapping valve is suitable for pressure purposes. The fitting is able to control the flow of water in the secondary system using a telescopic extension.
Nurses are made from materials compatible with the main water supply:
- HDPE or low-pressure polyethylene;
- steel;
- cast iron;
- brass.
Choosing a suitable saddle, before starting installation, you must check the completeness of the product and the length of the fasteners.
Work order
One of the most convenient ways involves installing a locking adapter before drilling. The ball valve in the open position passes the drill. You can protect yourself from the release of water by cutting the plastic bottle.
- prepare an electric drill;
- fasten a drill of a suitable diameter;
- install the upper cut of the plastic bottle on the flange;
- insert a drill into the hole;
- hold the drill with your right hand;
- put your left hand on the valve tap;
- carefully drill a hole;
- after the appearance of water, close the tap;
- remove the drill.
Screw the outlet with a threaded connection, and continue mounting the internal network.Upon completion of work, check the tightness of the joints. Instead of a drill, a metal crown can be used to drill large diameter pipes.
Inserting a cast-iron water pipe requires special care, as cast iron is brittle: excessive pressure on the drill bit or overheating of the pipe can lead to a violation of the integrity of the system.
Nurses withstand short-term pressure up to 16 atmospheres and have proven themselves at a working pressure of 10 atmospheres. The strength of the clamp connection is evidenced by the fact that it does not require the installation of a manhole. If possible, a caisson can be arranged at the insertion point, which will allow inspection of the pipeline at any time.
Manhole device
If a water tap is taken into balance by Vodokanal, the organization is responsible for the integrity and operability of the system. If the balance holder is a private person, for example, the owner of suburban real estate, it is necessary to provide the ability to control the insertion point:
- deepen the pit by 0.5-0.7 meters;
- fill the bottom with a layer of gravel 20-30 cm;
- cover the bulk material with a waterproofing coating;
- lay the reinforcement grid or tie the reinforcement yourself;
- make a concrete screed 10 cm high.
After “setting” concrete, you need to equip the shaft, cover it with a slab, providing a hole in it for the inspection hatch. The inside of the caisson must be treated with waterproofing mastic.
Knowing the principles of tapping into the main water supply system, you can independently mount the network on the territory of your own site. Bends from the centralized supply pipe can be done in such a way that the meter takes into account all the consumed water.
