Flow control valve

Details Flow control valve Flow control valve

1987-06-24

1989-02-21

Schwadron, Martin P.

Fluid handling

Systems

Sequentially progressive opening or closing of plural valves

25112911, F16K 4702

Patent

active

048056677

ABSTRACT:
A flow control valve, which supports a valve body movably to a valve shaft suported movably in a valve chamber, is provided at the valve shaft with flow grooves for allowing a fluid to flow therethrough even when the valve body operates for closing and a sealing member which closes the flow grooves when the valve shaft is further moved with respect to the valve body in condition of closing operation, thereby enabling a fluid passage to be open or closed in two steps.

REFERENCES:
patent: 966509 (1910-08-01), Wulf
patent: 1534877 (1925-04-01), Simmons
patent: 2200226 (1940-05-01), Larson
patent: 4539881 (1986-06-01), Yoshino

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