Small flow control valve with tight shutoff capability

Details Small flow control valve with tight shutoff capability Small flow control valve with tight shutoff capability

1995-01-27

1996-05-14

Chambers, A. Michael

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

251 614, 1374545, 1376253, F16K 31145, F16K 5100

Patent

active

055160794

ABSTRACT:
Small flow control valve with tight shutoff capability having a conventional valve housing with inlet and outlet ports and a one piece internal guide and seat ring combination, further having a plug with a lower throttling profile engaged within the seat ring bore; a deformable seal which is capable of being deformed by a collar radially inwardly to compress the exterior of the lower contoured plug portion to prevent leakage in the closed valve position. The collar is held in constant compression by a coiled spring placed between the collar and an enlarged head portion of the plug. The valve further has an actuating device adjustably attached thereto.

REFERENCES:
patent: 2065087 (1936-12-01), May
patent: 2963038 (1960-12-01), Sharp
patent: 3187775 (1965-06-01), Pinnell
patent: 3672629 (1972-06-01), Sorteberg
"Series 240 Sumson Micro-Trim", Samson Controls, Inc., Ontario, Canada, Oct. 1991.

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