Vacuum/pressure release valve

Details Vacuum/pressure release valve Vacuum/pressure release valve

1992-08-13

1993-07-13

Fox, John C.

Fluid handling

Destructible or deformable element controlled

Destructible element

1374934, F16K 17196

Patent

active

052264424

ABSTRACT:
A combination pressure relief valve is formed by a cylindrical valve body secured to a vessel containing fluid to be monitored. The end of the valve body opposite the vessel is normally closed by superposed dual valves comprising primary and secondary valves closing the valve body against excessive fluid pressure by a cage supported collapsible pin. Openings in the primary valve are normally closed by the spring biased secondary valve but are opened by ambient air pressure on the secondary valve, in the event of fluid pressure below atmospheric in the vessel being monitored.

REFERENCES:
patent: 2000431 (1935-05-01), Aumack
patent: 2203367 (1940-06-01), Schorer
patent: 4930536 (1990-06-01), Taylor
patent: 4977918 (1990-12-01), Taylor

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