In everyday life people daily use water, gas, which come through the pipes.For us it is important that the fluid flow smoothly done or time overlaps.For this purpose the valves, in particular shut-off valves.Most of the serviceability of valves depends on the work of many large enterprises - water utilities, heating, nefteperarbatyvayuschih plants, chemical plants, gas pipelines.Valves are different - locking forward and reverse, safety, regulatory, which can be automatic or controlled manually or electrically.
shut-off valves to help us stop the flow of any liquid or gas by turning the valve.By means of the safety valves can be released from the system of excess air or water (which is particularly important for systems where the flow is under pressure), and the check valve does not allow liquid or gas to start moving in the opposite direction.
shutoff valve direct traditionally used in two-pipe water heating systems, which provides for copper pipes or stainless steel.With the valve can be turned off separately taken the radiator and remove it without taking water from the entire system.
sealless shut-off valve for the water membrane type is usually put on the water pipes.Such valves have integrity, since made in form and flask equipped with external seals to wear.Its feature is that it does not affect the throughput, because it runs from zero pressure.
shut-off valves are most commonly used for pipes of small diameter, since at high pressures needed a great effort to control them.This is, perhaps, is their only drawback.Also, in contrast to the valves, the valves have a "dead" zone, where it can accumulate rust or other solid particles, which can lead to corrosion.
The design of the isolation valves are different from valves that the flow coincides with the movement of the shutter.Small move the shutter, as well as the minimum building height valves provided much more popular.The shut-off valves are also highly resistant to high pressure and temperature.They can operate in hostile environments.
Stop valves today for the different needs and depending on the pipe material can be made of steel, brass, bronze, glass, plastic, porcelain, titanium.
Structural features are dependent on the application shut-off valves.For example, the corner mounted on the corners of pipelines, and horizontal or vertical sections of pipe installed entrance and direct flow valves.The arrow on the unit always strictly correspond to the direction of flow.
various nuances in the design allows the use of shut-off valves in many areas.Thus, they are equipped with pumps, compressors, even internal combustion engines.
