Encyclopedical explanation of the valves
A valve is a device that regulates, directs or controls the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially obstructing various passageways. Valves are technically fittings, but are usually discussed as a separate category. In an open valve, fluid flows in a direction from higher pressure to lower pressure. The word is derived from the Latin valva, the moving part of a door, in turn from volvere, to turn, roll.
The simplest, and very ancient, valve is simply a freely hinged flap which drops to obstruct fluid (gas or liquid) flow in one direction, but is pushed open by flow in the opposite direction. This is called a check valve, as it prevents or "checks" the flow in one direction. Modern control valves may regulate pressure or flow downstream and operate on sophisticated automation systems.
Repair plumbing services performed in the flats
To common plumbing services should be installation of new sanitary facilities and repair of these devices and mending other hydraulic faults. Frequently performed hydraulic services for apartments are repairing a leaky faucet or washing machines, which ceased to spin the laundry. Similar repairs are done at home. But in such buildings often you have to also carry out work related to repair leaks resulting in the installation of plumbing. This is because the state of the responsibility of owners of housing blocks and homes can have installations mounted a dozen years earlier. Similar situation may occur also in the case of hospitals.
City of hydraulic
City of hydraulic engaged in the execution of various works. Some of them are contracted by the city authorities and owners of various public buildings, and others by owners of private flats and houses. Therefore, the scope of hydraulic works performed in cities is very wide. It includes both Pip drains and supervising the work performed after the flooding of the city by heavy rains and repair of hydraulic failure in flats and houses and installation of new sanitary facilities. Such an installation can be performed by plumbers working alone or working in the company hydraulic system. While the work is carried out after heavy rains need to rent a large company hydraulic system.