Seat centerline operated butterfly valve

Details Seat centerline operated butterfly valve Seat centerline operated butterfly valve

1980-09-11

1982-04-13

Chambers, A. Michael

Valves and valve actuation

Rotary valves

Butterfly

251307, F16K 122

Patent

active

043243835

ABSTRACT:
The actuator shaft of a butterfly valve rotates 90 degrees to open or close an associated flow interrupter. As the shaft rotates its 90-degree motion is imparted to associated link members and the flow interrupters that are operably connected to the shaft. Thus, a drive link, secondary shaft and vane, as well as the support trunnions, are rotated simultaneously. This arrangement permits the seating of the seal on an axis which coincides with the axis of the actuator shaft and the sealing effected is bidirectional.

REFERENCES:
patent: 1525024 (1925-02-01), Carver
patent: 2753147 (1956-07-01), Welge
patent: 3074421 (1963-01-01), Borcherdt
patent: 3260496 (1966-07-01), Borcherdt
patent: 3753549 (1973-08-01), Rubright
patent: 3902694 (1975-09-01), Friedell
patent: 4113230 (1978-09-01), McCabe
patent: 4241895 (1980-12-01), Sternenbey et al.
patent: 4266570 (1981-05-01), Stieglitz

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