Control valves

Details Control valves Control valves

1977-05-09

1981-08-25

Schwadron, Martin P.

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

277152, 277165, 277207R, 251215, 251335R, 251368, F16K 4100, F16V 3150

Patent

active

042854989

ABSTRACT:
A control valve has a gland seal comprising a sealing member formed of a flexible polymeric material, preferably PTFE. The sealing member comprises a tubular portion located around the valve spindle and a radially extending flange encircling the tubular portion, the sealing member being supported within the hollow body by its radially extending flange. The spindle and surrounding tubular portion have adjacent surfaces, at least one of which has an annular ridge biased into sealing contact with the other surface.

REFERENCES:
patent: 922294 (1909-05-01), Kobus
patent: 1106933 (1914-08-01), Farley
patent: 3305211 (1967-02-01), Phillips
patent: 3325143 (1967-06-01), Phillips
patent: 3327992 (1967-06-01), Billeter et al.
patent: 3490736 (1970-01-01), Snyder
patent: 3589677 (1971-06-01), Segers
patent: 3658290 (1972-04-01), Peters et al.
patent: 3747479 (1973-07-01), Nightingale et al.

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