Bellows seal and method for assembling

Details Bellows seal and method for assembling Bellows seal and method for assembling

1990-02-26

1991-10-22

Walton, George L.

Valves and valve actuation

Hermetic flexible wall seal for actuator

Bellows

251214, 277200, 277213, F16K 4110

Patent

active

050588613

ABSTRACT:
A bellows seal designed to hermetrically seal reciprocating stems from internal fluid pressure in control valves and methods of engaging and disengaging conventional valve plugs and rotatable valve stems from said bellows seal within a completely sealed environment, without resorting to welding joints.

REFERENCES:
patent: 1763486 (1930-06-01), Strong
patent: 2563992 (1951-08-01), De Grave
patent: 2887293 (1959-05-01), Gasche
patent: 2912867 (1959-11-01), Gallant
patent: 2956771 (1960-10-01), Shields
patent: 3206165 (1965-09-01), Salmon et al.
patent: 3761052 (1973-09-01), Tobbe et al.
patent: 4240610 (1980-12-01), Trimble
patent: 4399834 (1983-08-01), Baumann
patent: 4634099 (1987-01-01), Danko et al.
patent: 4687017 (1987-08-01), Danko et al.
patent: 4688601 (1987-08-01), Astill

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