Pressure control valve

Details Pressure control valve Pressure control valve

1996-02-08

1997-11-04

Michalsky, Gerald A.

Fluid handling

Pressure modulating relays or followers

With counter-balancing pressure feedback to the modulating...

13759618, 1376275, F15B 13042

Patent

active

056829183

ABSTRACT:
A pressure control valve, which possesses a primary pressure port, a secondary pressure port and a venting port. For control of the secondary pressure a valve operating device is present which is actuated by a control pressure present in a control chamber. A mechanical spring device urges the valve operating device against the direction of action of the control pressure in such a manner that when ambient pressure obtains in the control chamber, it automatically assumes a basic setting, in which the secondary pressure port is connected with the venting port for fluid flow. It is in this manner that there is an automatic venting of the secondary pressure port when the control chamber is free of pressure.

REFERENCES:
patent: 2012596 (1935-08-01), Anderson
patent: 2985490 (1961-05-01), Gates
patent: 3354894 (1967-11-01), Stoll

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