Gate valves

Details Gate valves Gate valves

1990-07-17

1991-08-06

Fox, John C.

Valves and valve actuation

With means to increase head and seat contact pressure

Gate valve

251328, F16K 314

Patent

active

050370642

ABSTRACT:
A gate valve has opposed valve seats respectively held in position by seat holders within an outer body of the valve. Each seat is fitted into the respective holder from the outer side of the latter and retained in position, against displacement, between that holder and the surrounding valve body and in sealing engagement with a corresponding sealing/locating recess in the body. On assembly of the valve wedge members are inserted between the seat holders so that the seats are wedged tightly in location positions within the body.

REFERENCES:
patent: 4116419 (1978-09-01), Diehl et al.
patent: 4531710 (1985-07-01), Tuto
patent: 4640302 (1987-02-01), Lupey

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