Unbalance pressure actuator for a flow control apparatus having

Details Unbalance pressure actuator for a flow control apparatus having Unbalance pressure actuator for a flow control apparatus having

1975-03-28

1976-09-07

Weakley, Harold W.

Fluid handling

Combined

251319, 60657, F16K 1900

Patent

active

039788857

ABSTRACT:
A flow control apparatus which has an external conduit for conducting fluid from a region having a pressure therein higher than the pressure immediately beneath a valve plug into an internal cavity disposed within the valve plug is provided with an unbalance actuator for isolating the cavity from the region when, for any reason, the pressure within the cavity exceeds the pressure within the region.

REFERENCES:
patent: 623935 (1899-04-01), Wilson et al.

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