Relief valve for gas flow rate regulator

Details Relief valve for gas flow rate regulator Relief valve for gas flow rate regulator

1995-06-08

1997-06-24

Lee, Kevin

Fluid handling

Systems

With flow control means for branched passages

137877, 251207, F16K 3906

Patent

active

056409974

ABSTRACT:
An improved rotor retainer housing for a rotatable rotor body and a relief sealing mechanism for a gas flow rate regulator. The retainer housing having structural features equivalent to the essential corresponding features of a conventional metal part is formed of molded plastic. A thin metallic layer is provided on the exposed surfaces of the molded plastic part to enhance surface conditions for maintaining an effective seal between the retainer housing and associated parts. The relief sealing mechanism utilizes a separate relief valve and relief valve seal to prevent premature failure of the seal during normal operating pressures. The seal is a metal retaining ring having a polymer O-ring integrally formed within the retaining ring. The O-ring provides sealing surfaces between the relief valve and the gas inlet on the regulator.

REFERENCES:
patent: 4484695 (1984-11-01), Fallon et al.
patent: 4643215 (1987-02-01), Philipot et al.
patent: 5289850 (1994-03-01), Sarson et al.

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