according to the pressure valve has the following categories:

( 1) Vacuum valve: refers to the working pressure is lower than the standard atmospheric pressure of the Industrial Valves.

( 2) Low pressure valve: refers to the nominal pressure PN & le; 1. 6 mpa.

( 3) Medium pressure valve: refers to the nominal pressure PN to 2. 5Mpa、4. 0Mpa、6. 4 mpa.

( 4) High pressure valve: refers to the nominal pressure PN to 10. 0Mpa～80. 0 mpa.

( 5) Ultrahigh pressure valve: refers to the nominal pressure PN≥ 100. 0 mpa.

( 6) Filter: refers to the nominal pressure PN is 1. 0 mpa, 1。 6 mpa

the article extracts by https://www. mechvalvechina。 com

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