Butterfly valve

Details Butterfly valve Butterfly valve

1981-10-30

1983-08-16

Schwadron, Martin P.

Valves and valve actuation

Rotary valves

Butterfly

277166, 277188R, F16K 1226

Patent

active

043986960

ABSTRACT:
This invention concerns a butterfly valve having a resilient, adjustable seat for pivoting disc. The seat comprises an elastomeric seating attached to a clamping ring which slides along the walls of the first portion of the flow passage extending through the body. A plurality of actuators extend through the clamping ring and seat ring into an axial annular wall to initially compress the seat ring. The flow passage is configured so that the axial wall of the clamping ring is uniformly exposed to the fluid pressure in the first passage portion.

REFERENCES:
patent: 3401915 (1968-09-01), Kim
patent: 3814380 (1974-06-01), Kormos et al.
patent: 4036468 (1977-07-01), Webb
patent: 4082246 (1978-04-01), Rothwell
patent: 4281818 (1981-08-01), Cunningham et al.

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