Butterfly valve

Details Butterfly valve Butterfly valve

1975-04-25

1978-02-14

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

251 634, 251 80, F16K 31126

Patent

active

040734650

ABSTRACT:
There is disclosed a butterfly-type valve cooperable with a valve seat element formed of an elastomeric material, wherein this element also forms a seal between two identical housing halves. There is also disclosed an improved method of making such a valve, as well as a vacuum motor for actuating the valve which incorporates a linkage mechanism having force limiting means to prevent the application of excessive forces to this valve.

REFERENCES:
patent: 1793226 (1931-02-01), Eggleston
patent: 1914181 (1933-06-01), Tabb
patent: 2010129 (1935-08-01), Baker
patent: 2315775 (1943-04-01), D'Arcey
patent: 2715009 (1955-08-01), Beekley
patent: 2872149 (1959-02-01), Battey et al.
patent: 3118465 (1964-01-01), Scaramucci
patent: 3212350 (1965-10-01), Bradford
patent: 3262683 (1966-07-01), Ball et al.
patent: 3302534 (1967-02-01), Bauer et al.
patent: 3321194 (1967-05-01), Carlson
patent: 3568975 (1971-03-01), Obermaier
patent: 3675681 (1972-07-01), Obermaier
patent: 3727993 (1973-04-01), Schenk
patent: 3857406 (1974-12-01), Dorling
patent: 3871615 (1975-03-01), Donner

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