The Structural classification of safety valve

      The classification of safety valve

     Safety valve structure has two main categories: spring and the lever type. Spring type refers to seal the valve flap and valve seat by a spring force. Lever type is by force lever and weight. 

    With the large capacity, and a pulse type safety valve, also known as the pilot type safety valve, composed of a main valve and the auxiliary valve.When more than the medium pressure pipeline specified pressurevalue, the auxiliary valve opens first, medium along the catheter into the main safety valve, and the main safety valve open, make the medium pressure reduction.

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     Height diameter and valve safety valve emissions depends on thevalve seat to open, can also be divided into two types: Micro open type opening height is the valve seat diameter (1/15) ~ (1/20), full opening is (1/3) ~ (1/4).

In addition, with the use of different requirements, there are closed and not closed. Closed discharge medium does not leak, all along the specified outlet, generally used for toxic and corrosive medium.Not closed or generally used for non-toxic non corrosive medium.

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