Butterfly valve apparatus

Details Butterfly valve apparatus Butterfly valve apparatus

1975-08-06

1977-02-22

Schwadron, Martin P.

Valves and valve actuation

Mechanical movement actuator

Gear

251229, 251305, 251308, F16K 3144

Patent

active

040088774

ABSTRACT:
A butterfly valve apparatus comprising a rotating shaft, a valve stem movable by the rotating shaft through a coupling member and a valve plate fixed within a valve housing to the valve stem.

REFERENCES:
patent: 1672430 (1928-06-01), Schnyder
patent: 2876984 (1959-03-01), Reppert
patent: 2913218 (1959-11-01), Broz
patent: 2974921 (1961-03-01), Kaswan
patent: 3064938 (1962-11-01), Knox
patent: 3245655 (1966-04-01), Oetjens
patent: 3376015 (1968-04-01), Forsman et al.
patent: 3425439 (1969-02-01), Duffey et al.
patent: 3608861 (1971-09-01), Helman et al.
patent: 3642247 (1972-02-01), Scaramucci
patent: 3647179 (1972-03-01), Scaramucci et al.
patent: 3656711 (1972-04-01), Toelke

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