Flow control valve

Details Flow control valve Flow control valve

1985-10-24

1987-09-22

Michalsky, Gerald A.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

137312, 1376254, 1376255, 251 613, 2513352, F16K 31126

Patent

active

046948481

ABSTRACT:
A direct acting flow control valve operative by an actuator responsive to fluid pressure from an external source. The actuator includes a pair of spaced apart pistons and associated rolling diaphragms which define an actuator chamber into which the fluid pressure is admitted, and a separate leakage chamber into which fluid will pass on leaking through a defective diaphragm, the leakage chamber being adapted for communication with an external indicator, shutoff valve or the like.

REFERENCES:
patent: 549407 (1895-11-01), Vail
patent: 1539630 (1925-05-01), Beaird
patent: 2770799 (1956-11-01), Horn
patent: 2897836 (1959-08-01), Peters et al.
patent: 3047003 (1962-07-01), Gurney
patent: 3212525 (1965-10-01), Henderson
patent: 3762430 (1973-11-01), Maercklein
patent: 4506694 (1985-03-01), Daghe et al.
patent: 4615353 (1986-10-01), McKee
Beard, Chester S., "Final Control Elements: Valves and Actuators", pp. 234, 235.

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