Check valve

Details Check valve Check valve

2005-06-23

2008-12-09

Hepperle, Stephen M (Department: 3753)

Valves and valve actuation

With correlated flow path

Valve operated by joining flow path sections

C251S149800

Reexamination Certificate

active

07461828

ABSTRACT:
A gas valve having a mechanism which prevents gas from flowing out. The check valve is installed at the opposite position of the safety valve, and has a supporting seat with a hollow body, the outer surface of which is threaded to hold on the gas inlet-outlet. The valve has a hollow body with the outer end being made as a shoulder, to attach closely with the inside of the supporting seat. At the inner end of the supporting seat is a piston that is preformed as one piece. It has one end as a hollow cylinder, and a number of holes surrounding the hollow cylindrical part to be the gas inlet-outlet of the gas valve. The other end is a circular flange larger than the hollow cylindrical part, with wings protruding to support the spring.

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