Differential pressure control valve

Details Differential pressure control valve Differential pressure control valve

G - Physics

05

D

137/127

G05D 16/00 (2006.01) G05D 16/06 (2006.01)

Patent

CA 1270725

ABSTRACT This invention is directed to a differential control valve. The differential pressure is maintained by differing area surfaces on a piston assembly which will be balanced at a predetermined differential established at the manufacturing operation. There is a spring member operating on two valve balls which provides a delayed pressurization of the controlled chamber. The control valve has a ball valve at the exit port to control the low pressure side of the differential control valve assembly, providing a fail-safe system with no adjustments required after manufacture if there is a pressure increase downstream. -1-

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