Through conduit gate valve

Details Through conduit gate valve Through conduit gate valve

1983-05-11

1986-05-13

Rosenthal, Arnold

Valves and valve actuation

Reciprocating valve

Gate

251329, 251367, F16K 3316, F16K 2704

Patent

active

045881642

ABSTRACT:
A through-conduit, double-wedging parallel seat gate valve. The valve has a monolithic body forming a spherical segment with a cylindrical flow passage and flange end connections. The body has a transverse chamber mounting a rectangular gate moved across the passage between opened and closed positions. The chamber has an obround cross section with parallel sides facing the sides of the gate and rounded ends facing the edges of the gate. Integral parallel guide surfaces on the body separate the rounded ends from the parallel sides, and these guide surfaces engage the edges of the gate. Replaceable seats about the flow passage seal to the sides of the gate. Upper and lower closure members are releasably secured on annular sealing surfaces on the body and enclose the gate within the chamber. The flanges and body can have the same radii as the bar stock from which the body is machined. The guide surfaces are tangents at the intersection of semicylindrical grooves in the parallel sides with the rounded ends. These grooves facilitate removal of the seats.

REFERENCES:
patent: 3743246 (1973-07-01), Heller
patent: 4440381 (1984-04-01), Tipton, Jr.
patent: 4443920 (1984-04-01), Oliver
Sales Brochures--copies attached, W-K-M Cat. No. 82, pp. 8605, 8607 & 8606 (1982).
Gulfco Cat. No. 108, pp. 11, 12 & 13 (1981).
Demco Cat. G7-79, pp. (2) (1979).
Vetco Tech. Bul. VTB 3-01, pp. (3) (1981).
Newco Cat. pp. 25 & 36 (1982).
Gray Tool Co., Cat. p. 3185 (1982).

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