Compact gate valve

Details Compact gate valve Compact gate valve

1976-05-13

1977-12-13

Nilson, Robert G.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251 58, 251175, 251187, 251335B, F16K 310

Patent

active

040625150

ABSTRACT:
This invention relates to a double-disc gate valve which is compact, comparatively simple to construct, and capable of maintaining high closing pressures on the valve discs with low frictional forces. The valve casing includes axially aligned ports. Mounted in the casing is a sealed chamber which is pivotable transversely of the axis of the ports. The chamber contains the levers for moving the valve discs axially, and an actuator for the levers. When an external drive means pivots the chamber to a position where the discs are between the ports and axially aligned therewith, the actuator for the levers is energized to move the discs into sealing engagement with the ports.

REFERENCES:
patent: 2467945 (1949-04-01), Pottmeyer
patent: 3136330 (1964-06-01), Dowling

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