2024 Author: Howard Calhoun | [email protected]. Last modified: 2023-12-17 10:16
In everyday life, a person daily uses water, gas, which comes through pipes. It is very important for us that the flow of liquid or gas flows freely or is blocked in time. For this, shut-off valves, in particular shut-off valves, are used. Often, the operation of many large enterprises - water utilities, heating networks, oil refineries, chemical plants, gas pipelines - often depends on the serviceability of valves. Valves are different - shut-off direct and non-return, safety, control, which can be automatic or controlled both manually and electrically.
Stop valves help us shut off the flow of any liquid or gas by turning the valve. With the help of safety valves, excess air or water can be released from the system (which is especially important for systems where the flow moves under pressure), and the check valve does not allow liquid or gas to start moving in the opposite direction.
The direct shut-off valve is traditionally used in two-pipe water heating systems where copper or stainless steel pipes are provided. By means of a valve can be switched off separatelythe taken heating device and dismantle it without draining the water from the entire system.
Sealless diaphragm type water shut-off valve is usually installed on water pipes. Such valves are leak-tight, because they are made in the form of a flask and are not equipped with external seals that wear out. Its peculiarity lies in the fact that it does not affect the throughput, as it works from zero pressure.
Shut-off valves are most often used for pipelines of small diameter, since high pressures require more effort to control them. This is perhaps their only drawback. Also, unlike valves, valves have "dead" zones where rust or other hard particles can accumulate, which can lead to corrosion.
By design, check valves differ from gate valves in that the movement of flow coincides with the movement of the valve. The small stroke of the shutter, as well as the minimum construction height, provided the valves with much greater popularity. Gate valves are also highly resistant to high pressures, temperatures. They can be used in aggressive environments.
Stop valves today for different needs and depending on the pipe material used can be made of steel, brass, bronze, glass, plastic, porcelain, titanium.
Design features depend on the location of the shut-off valves. For example, the corner is installed on turnspipelines, and on horizontal or vertical sections of pipes, a through and straight-through valve is installed. At the same time, the arrow on the body of the product always strictly corresponds to the direction of flow.
The variety of nuances in the design allows the use of shut-off valves in many areas. So, pumps, compressors, even internal combustion engines are equipped with them.
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