Double disc gate valve

Details Double disc gate valve Double disc gate valve

1984-11-23

1986-03-04

Schwadron, Martin P.

Valves and valve actuation

With means to increase head and seat contact pressure

Gate valve

251203, 251327, F16K 314, F16K 324

Patent

active

045736600

ABSTRACT:
A double disc gate valve of the type wherein discs are provided with wedge means which force the discs against substantially parallel opposed valve seats having at least one spherical surface between a wedge and a valve disc to allow the discs to have more freedom of movement to accommodate misalignment of the seats due to variation in manufacturing tolerances or pipe line distortion.

REFERENCES:
patent: 119057 (1871-09-01), Snyder
patent: 1498018 (1924-06-01), Cronkhite et al.
patent: 2689106 (1954-09-01), Watkins
patent: 4007906 (1977-02-01), Karpenko
patent: 4081175 (1978-03-01), Hasbrouck

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