Gate valve

Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed

Patent

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Details

251327, 251328, 251330, 251329, F16K 302, F16K 330

Patent

active

044403810

ABSTRACT:
A gate valve which includes a body defining a cylindrical bore opening at one side of the body, and defining also a fluid flow passageway extending through the body and intersecting the cylindrical bore at a right angle. A pair of seat ring adaptors extend into the body via the opposite end portions of the fluid flow passageway, and each carries an annular pipe flange at its outer end and spaced from the body, and an annular bolting flange adjacent the body to facilitate bolting the adaptor to the body. Each adaptor carries within a counter-bore formed in its inner end inside the body, an annular seat ring. A gate is mounted for reciprocating movement within the cylindrical bore of the body and between the seat rings. A stem threadedly engages the gate and projects upwardly through an opening formed in a bonnet bolted to the body. An operating handle is secured to the opposite end of the stem from the end threadedly engaged with the gate.

REFERENCES:
patent: 2869574 (1959-01-01), Volpin
patent: 3006599 (1961-10-01), Eckert, Jr.
patent: 3217735 (1965-11-01), Stalter
patent: 3504885 (1970-04-01), Hulsey
patent: 3768774 (1973-10-01), Baugh
patent: 4033550 (1977-07-01), Wheatley et al.
patent: 4372531 (1983-02-01), Rollins et al.

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