Fluid handling – Line condition change responsive valves – Fluid opened valve requiring reset
Patent
1983-04-21
1985-10-08
Schwadron, Martin P.
Fluid handling
Line condition change responsive valves
Fluid opened valve requiring reset
137860, 220208, 220366, F16K 1700
Patent
active
045454000
ABSTRACT:
A pressure relieving device for use with gas flowmeters, pressure regulators and other fluid flow equipment is described. The device includes an O-ring and means for compressing and retaining the O-ring to provide a fluid-tight seal under normal operating pressure, but having a gap positioned such that the occurrence of an excessive pressure causes a portion of the O-ring to move into and through the gap to relieve the excessive pressure. A passage for enabling the fluid to contact the O-ring is sized to allow sufficient flow to relieve a fluid pressure substantially in excess of the normal operating pressure.
REFERENCES:
patent: 3320097 (1967-05-01), Sugalski
patent: 3363644 (1968-01-01), Malec
patent: 3633606 (1972-01-01), Hay et al.
patent: 4317375 (1982-03-01), Egert
Gruber Arthur W.
Smith Loren C.
Cassett Larry R.
Draegert David A.
Novack Sheri
Schwadron Martin P.
The BOC Group Inc.
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