Low flow control valve

Details Low flow control valve Low flow control valve

1982-01-22

1984-03-06

Capossela, Ronald C.

Valves and valve actuation

With material guide or restrictor

Movable or resilient guide or restrictor

251225, F16K 4700, F16L 5502

Patent

active

044349653

ABSTRACT:
Low flow control valve having contoured cylindrical plug means cooperating with a semi-elastic sleeve, the latter being suitably retained within a valve orifice capable of providing not only tight shut-off, but also no clearance between said valve plug and orifice when the plug is retracted so that all fluid passes by a profiled portion of said plug. Said sleeve type sealing means is further pressure assisted by line fluid to enhance the aforementioned sealing capability.

REFERENCES:
patent: 3572629 (1971-03-01), Clark
patent: 3675892 (1972-07-01), Biermann
patent: 4230300 (1980-10-01), Wiltse
patent: 4231347 (1980-11-01), Ohumi et al.
patent: 4278234 (1981-07-01), Baumann
patent: 4283041 (1981-08-01), Kujawski

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