Pop-type relief-valve construction

Details Pop-type relief-valve construction Pop-type relief-valve construction

1990-05-02

1992-01-07

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

Pop valves

F16K 1706

Patent

active

050781774

ABSTRACT:
The invention contemplates an improved poppet-type relief-valve construction which features an inlet-port configuration at upstream offset from the valve-closed seat region of the valve. To open the valve, a valve member must be moved by upstream pressure exceeding a predetermined threshold. This valve member integrally carries a specially profiled formation that (a) is upstream from the seat region and (b) coacts with a specially profiled region of inlet port. This action necessarily takes place upstream from the seat region and is such as to provide control of valve operation especially during that fraction of valve-member displacement that spans the "cracking" phase of valve operation. The net result is to avoid development of the "chatter" which customarily characterizes the "cracking" phase of valve operation.

REFERENCES:
patent: 961735 (1910-06-01), Schutte
patent: 2069522 (1937-02-01), Flournoy
patent: 3080885 (1963-03-01), Webster et al.

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