Safety valve assembly

Details Safety valve assembly Safety valve assembly

1978-12-14

1981-05-26

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

91424, 91448, 13759618, F15B 13043, F15B 2000

Patent

active

042692253

ABSTRACT:
A safety valve assembly for pressurized medium-operated devices has two valves operating in parallel with one another and each having a working piston and a valve member. The assembly has a housing provided with a supply inlet, a consumer outlet and a discharge outlet. The valve members of the valves are guided in chambers provided in the housing and communicating with one another by passages which crosswise connect the chambers. The valve members in the chambers establish or interrupt communication between the inlet and outlets. When a malfunction occurs, at least one valve member blocks the cross passages so that the consumer outlet does not communicate with the inlet but, instead, is vented through the discharge outlet so that no residual pressure develops in the consumer outlet.

REFERENCES:
patent: 3108612 (1963-10-01), Hofmann et al.
patent: 3283862 (1966-11-01), Warnock

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