Control valve

Details Control valve Control valve

1977-02-14

1979-02-06

Schwadron, Martin P.

Fluid handling

Larner-johnson type valves; i.e., telescoping internal valve...

251 635, F16K 31122

Patent

active

041379330

ABSTRACT:
A fluid flow control device which incorporates a ring or annulus of resilient material which may be deformed to effect a variable closure with a centrally disposed member, thereby controlling fluid flow through the device. The device is also capable of effecting a "fail-safe" metal-to-metal seal should the resilient element be damaged or a metal-to-metal seal be desired for shutting off flow through the device.

REFERENCES:
patent: 1477722 (1923-12-01), Slattery
patent: 2416787 (1947-03-01), White
patent: 2608204 (1952-08-01), Dunn
patent: 2917269 (1959-12-01), Welker
patent: 3746300 (1973-07-01), Welker

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