What is a safety valve

The safety/pressure relief valve is a standard diaphragm safety/pressure relief valve, which is mainly used in heating, air conditioning, thermal storage hot water systems, irrigation systems, control of cold and heat sources and system pressure. When the system pressure exceeds the set value of the safety valve, the safety valve automatically opens to release the system pressure to the atmosphere, and automatically closes when the pressure is lower than the safety value, so that the system with the safety valve can operate safely.

According to the structure of the safety valve can be divided into ⑴ Heavy hammer (lever) type safety valve, ⑵Spring type safety valve, ⑶ Pulse safety valve.

Breathing valve is often used on the top of the storage tank. It can be used to exhale or inhale from its name. It is generally composed of two valve chambers, one as the pressure side and the other as the vacuum side. When the pressure of the storage tank is too high, the valve on the pressure side will open, and the valve on the vacuum side will be closed at the same time, so that the gas in the storage tank is discharged; if the pressure of the storage tank is lower than the design pressure, the valve on the vacuum side of the breathing valve will open At the same time, the valve plate on the pressure side is closed and the atmosphere is sucked in. Its main function is to balance the pressure of the storage tank and avoid its collapse or expansion. Generally, a flame arrestor is also connected to the lower part of the breathing valve. The safety valve is often used at the end of the pipeline. Excessive pressure in the pipeline will release the pressure, and it is generally used in conjunction with rupture discs.