Protection valve is a safety valve, its opening and closing pieces by the external force is normally closed state, when the equipment or pipeline medium pressure, exceeds the specified value automatically open to the outside of the system through the media to prevent emissions piping or equipment within the medium pressure exceeds the set value.

1.A liquid medium with a safety valve, spring safety valve is generally used Weiqi;

2.the steam boiler safety valve, generally used in open entire Kai spring safety valve;

3.air or other gas medium with safety valve, generally used in closed safety spring safety valve;

4.Liquefied petroleum gas or LPG rail tank car tank with a safety valve, generally used in the entire Kai interior safety valve;

5.Wells export safety valve, pilot operated relief valve is generally used;

6.Steam generation equipment, high-pressure bypass valve, generally used in a safe and controlled pilot safety valve dual function;

7.If you do require periodic safety valve open test, should be used to enhance the wrench with a safety valve. When the medium pressure reaches the opening pressure of 75% or more, can be used to enhance the wrench valve lift slightly from the seat to check the safety valve opens and flexibility;

8.If the medium temperature is higher, in order to reduce the temperature of the spring chamber, generally closed valve when the temperature exceeds 300 ℃ and using open safety valve when the temperature exceeds 350 ℃, should use safety valve with radiator;

9.If the safety valve outlet pressure is variable, and its variation over 10% of opening pressure should be used bellows valve;

10.If the medium is corrosive, should be used bellows valve, to prevent corrosion of vital parts due to media failure.Follow these ten selected safety valve, safety valve should you buy a qualifying product that may be used to piping and equipment systems.

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