Knot the junction consists of a tee valve (valve) and nozzle. This site is well placed in a standard concrete diameter 1.0 m. The inset in the main, padded asbestos-cement pipe, tee embed, establish a special saddle. Water-measuring unit is designed to track the number of water consumption. Equip them, if possible, in dry areas with ambient temperatures not lower than 2 C. Most often, water-measuring units installed in the basement. A simple water measurement site has a shut-off valve, drain valve and water-measuring device.
Valves and valves make it possible to remove the water meter for repair or disable the internal networks of water supply. Water meter is used for metering water into the house, on the branches, which give water to large consumers. There are several designs of water meters, among which in the systems of internal PEX plumbing system are the most common high-speed water meters.
The principle of operation is based on their proportionality between velocity and flow of water. With a small flow of water (up to 10 l / h) is most often used with impeller water meters with a caliber 15, 20, 30 and 40 mm. , Whichever is available as a counter mechanism (in the Hydro-insulated chamber or in the aquatic environment), water meters are Super dry and mokrohodnye. Meters vane need only be installed horizontally. Error of the meter shall not exceed ± 5%.
For internal PEX Plumbing system networks use steel, stainless steel, brass or polymeric pipes. Water-gas pipes with small diameters, intended for internal networks, there are black and galvanized. Pipes with zinc coating are more durable, it would be preferable, especially for potable PEX plumbing system.
The ends of the tubes may be smooth, intended for welding, or have a cylindrical or conical thread. Conventional internal PEX plumbing, with operating pressure up to 6 kg / cm 2, for ease of repair is mounted detachable.
To connect the water-gas pipes used connectors and fittings (fittings) with an internal cylindrical thread, which are made of ductile iron, steel or brass. Sealing of threaded joints perform flax on the paint or special sealing tape. If the operating pressure in the network exceeds 6 kg / cm 2, the connections should be carried conical thread.
Laying plumbing pipeline systems of hot and cold water using metal-dimensional tubes regulated Code of Practice SP 40-103-98, developed the RF State Committee for Construction and Housing Complex. When designing the internal PEX Plumbing system recommended pipe riser more than 20 mm. Floor join the risers should be carried out, usually from pipes OD 14 and 16 mm through the distribution headers.
