Seat assembly for butterfly valve

Details Seat assembly for butterfly valve Seat assembly for butterfly valve

1980-05-27

1982-03-02

Spiegel, H. Jay

Valves and valve actuation

Rotary valves

Butterfly

F16K 1226

Patent

active

043175589

ABSTRACT:
A method of making an improved seat assembly for a butterfly valve. The seat assembly comprises a flexible, circular metal band embedded in a resilient material to form an annular seat assembly. The assembly is made by supporting the band in a fixed spatial position on movable finger members, positioning a mold about, but spaced from, the band, and molding the annular seat assembly in the mold to embed the band. The invention is also directed toward an improved seat assembly. In a preferred embodiment the circular band is made of two curved sections overlapping at the two joints and having diametrically opposite holes in the two overlapping areas.

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patent: 4223430 (1980-09-01), Sherlaw
patent: 4225112 (1980-09-01), Libke

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