Dished disc free-disc butterfly valve

Details Dished disc free-disc butterfly valve Dished disc free-disc butterfly valve

1982-08-31

1985-06-04

Schwadron, Martin P.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251188, 251308, F16K 122

Patent

active

045209952

ABSTRACT:
This invention relates to the dished discs employed in the construction of the free-disc or floating disc butterfly valves wherein the disc pivotably disposed in the valve body to block the fluid passage is shaped like a dish. The valve stem is mechanically connected to the convex side of the dished disc substantially near the center. The central axis of the valve stem substantially passes through the center of a hypothetical sphere that substantially includes the rim surface of said dished disc and the surface of the seat disposed in the valve body.

REFERENCES:
patent: 3327732 (1967-06-01), Deve
patent: 3601364 (1971-08-01), Scaramucci
patent: 3627259 (1971-12-01), Williams

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