Butterfly valve having a split vane

Details Butterfly valve having a split vane Butterfly valve having a split vane

1973-12-12

1976-01-27

Klinksiek, Henry T.

Valves and valve actuation

Mechanical movement actuator

Gear

251305, 251212, 1376373, F16K 3153

Patent

active

039348512

ABSTRACT:
The butterfly vane is constructed of two semi-circular parts, each of which pivots about a common longitudinal axis. One part is mounted on a shaft which is connected to a drive while the second part is mounted on a second shaft concentrically of the first shaft. The second shaft is driven in an opposite direction off the first shaft by a suitable transmission. The construction of the split vane and transmission is such that the closing torques are reduced to near zero eliminating the sharp torque gradients in throttling angles greater than 60.degree..

REFERENCES:
patent: 958313 (1910-05-01), Riordan
patent: 2209397 (1940-07-01), Gannestad
patent: 2412918 (1946-12-01), Sladky
patent: 2706492 (1955-04-01), Horland
patent: 2755818 (1956-07-01), Dietz
patent: 3070345 (1962-12-01), Knecht
patent: 3633626 (1972-01-01), Zirps et al.

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