Pilot valve

Details Pilot valve Pilot valve

1977-11-21

1979-11-06

Weakley, Harold W.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

137107, 137464, 137495, G05D 700

Patent

active

041732332

ABSTRACT:
There is disclosed a pilot valve which controls the flow of a control fluid to and from a fluid-operated actuator, and which comprises an inlet to admit the control fluid to a chamber thereof, a port connecting the chamber with the actuator, a passageway connecting the chamber with a vent port, and a ball which is shifted between a set position closing the passageway so that control fluid is admitted from the inlet to the actuator and a tripped position closing the inlet so that control fluid is exhausted from the actuator out the vent port.

REFERENCES:
patent: 2247037 (1941-06-01), Smith
patent: 2474772 (1949-06-01), Ashton
patent: 3272218 (1966-09-01), Johnson
patent: 3294111 (1966-12-01), Abercrombie
patent: 4040437 (1977-08-01), Gottling

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