Pressure relief valve and cryopump utilizing the same

Details Pressure relief valve and cryopump utilizing the same Pressure relief valve and cryopump utilizing the same

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 1/46 (2006.01) F16K 17/04 (2006.01) F16K 25/00 (2006.01)

Patent

CA 2049029

2049029 9012231 PCTABS00002 A self-cleaning pressure relief valve (60) has a spring-biased valve closure (68) with an annular contact edge (76) which makes contact with an o-ring (66) to seal the valve. The annular contact edge is slightly larger in radius than the central radius of the o-ring so that changing pressure on the closure causes the contact edge to slide along the surface of the o-ring.

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