Valve

Details Valve Valve

1976-03-16

1978-06-06

Schwadron, Martin P.

Valves and valve actuation

With means for blocking or disabling actuator

Latch manipulator mounted on handle or stem

251110, 251305, 251306, 251297, F16K 3502

Patent

active

040931781

ABSTRACT:
A butterfly type valve is provided with an annular sealing ring disposed in a groove in the bevelled periphery of the circular valve plate. The operating shaft is journalled in a radially disposed external boss and an operating handle having a spring biased locking plunger is secured to the shaft. A locking plate having a plurality of locking apertures is adjustably clamped to the boss for operative engagement with the locking plunger on the handle.

REFERENCES:
patent: 657059 (1900-08-01), Broomell
patent: 961466 (1910-06-01), Shade
patent: 1032649 (1912-07-01), Bieniek
patent: 1217700 (1917-02-01), Brown et al.
patent: 1857477 (1932-05-01), Ritter
patent: 2114168 (1938-04-01), Auger
patent: 2577260 (1951-12-01), Moore
patent: 2873942 (1959-02-01), Drane
patent: 3329394 (1967-07-01), Overbaugh
patent: 3355141 (1967-11-01), Cooper
patent: 3395886 (1968-08-01), Fawkes
patent: 3442488 (1969-05-01), Adams
patent: 3521857 (1970-07-01), Over
patent: 3648970 (1972-03-01), Hartmann et al.
patent: 3771759 (1973-11-01), Pouquette
patent: 3809361 (1974-05-01), Pfundstein et al.

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