Fluid handling – Systems – Sequentially progressive opening or closing of plural valves
Patent
1991-08-14
1992-08-04
Chambers, A. Michael
Fluid handling
Systems
Sequentially progressive opening or closing of plural valves
13761413, 251210, 251297, F16K 302
Patent
active
051350327
ABSTRACT:
A slurry gate valve incorporating dual gates for the positive interruption of fluid flow through a pipeline associated with the valve. The dual gate valve is movable through three positions: a fully open position, a half open position, and a full closed position. The valve includes a main leader gate and a follower gate each having selectively alignable fluid passageways. An interlock mechanism selectively connects the dual gates for simultaneous travel once the gates have reached the half open position. The dual action gate valve reduces wear on the downstream resilient seals associated with the valve by shielding the seal against the fluid flow through the main passageway of the valve.
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Chambers A. Michael
Foster Valve Corporation
Sutherland Malcolm L.
Zarins Edgar A.
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