Butterfly flap valve

Details Butterfly flap valve Butterfly flap valve

1974-11-25

1976-07-06

Wealsley, Harold W.

Valves and valve actuation

Pivoted valves

F16K 116

Patent

active

039678130

ABSTRACT:
The specification describes a butterfly flap valve comprising a flap which on opening is adapted firstly to be axially displaced and then turned. For operating the flap a shaft extends transversely to the direction of flow into the housing of the valve and carries fixed on it an arm lever which is pivotally connected with the flap. In a plane spaced from the plane of the lever the flap is connected with a link which is pivotally connected with the housing. The link and the lever form an articulated quadrilateral which is staggered so as to lie in two planes.

REFERENCES:
patent: 2710737 (1955-06-01), Schaupp
patent: 3023774 (1962-03-01), Schuller
patent: 3428064 (1969-02-01), Phillips
patent: 3658293 (1972-04-01), Gaebel
patent: 3804124 (1974-04-01), Finke
patent: 3847373 (1974-11-01), Hagar

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