Slide valve

Details Slide valve Slide valve

1987-01-22

1988-10-11

Walton, George L.

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251175, 251193, 251327, 251328, F16K 316, F16K 320

Patent

active

047765640

ABSTRACT:
The slide or gate valve (10) suitable in particular as pressure valve comprises a valve housing (12) in which a relatively wide and preferably double-walled closure body (14) is displaceable. The sealing of the closure body (14) within the valve housing (12) in the closed state is via a pressure-activatable seal (66). Downstream of the closure body (14) a tubular member (30) of increased diameter is disposed which serves as expansion member. The features of the very wide closure body, the pressure-activatable seal and the expansion member (30) make it possible to actuate the valve when pressure is in the conduits through which a gaseous or liquid medium charged with a high proportion of solid is conveyed.

REFERENCES:
patent: 1218877 (1917-03-01), Long et al.
patent: 1411608 (1922-04-01), Dawson
patent: 1868147 (1932-07-01), Kruse
patent: 3088705 (1963-05-01), Blackhall et al.
patent: 3110470 (1963-11-01), Dumm
patent: 3185436 (1965-05-01), Rovang et al.
patent: 3367625 (1968-02-01), Fortune
patent: 4383546 (1983-05-01), Walters, Jr.
patent: 4592534 (1985-06-01), Ueda et al.

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