Damper valve having an adjustable seat

Details Damper valve having an adjustable seat Damper valve having an adjustable seat

1999-02-04

2000-09-26

Shaver, Kevin

Valves and valve actuation

Rotary valves

Butterfly

251170, F16K 1228

Patent

active

061233196

ABSTRACT:
A damper valve includes a base, a valve blade pivotally mounted on the base and two serially arranged valve seats. Each valve seat comprises adjustable valve seat portions on opposite sides of a pivot axis of the valve blade, the valve seat portions being positioned on opposite sides of the blade. Each valve seat portion includes a stationary member fixed to the base, an adjustable element movable relative to the stationary member, and bolts fixing the adjustable element to the stationary member. Adjustment devices are provided for moving each adjustable element toward the valve element to provide a precise fit along the entire length of the valve seat. The valve seats and the valve blade define an annulus which can contain gas at a higher pressure than the fluid controlled by the valve, so that none of the controlled fluid flows past the valve.

REFERENCES:
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patent: 4582080 (1986-04-01), Stock
patent: 5327928 (1994-07-01), Thomason
patent: 5494257 (1996-02-01), Maxwell

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