Gate valves

Details Gate valves Gate valves

1979-10-16

1982-02-02

Rosenthal, Arnold

Valves and valve actuation

Reciprocating valve

Gate

264261, 264277, 251356, F16K 312

Patent

active

043135935

ABSTRACT:
A gate for a gate valve is formed with an undercut groove in which is inserted a screw-threaded coupling member formed with a screw-threaded hole which is a clearance fit into the groove. The screw-threaded hole is plugged then the gate containing the coupling member is inserted into a mould into which coating material in a fluid state is introduced under pressure so as to cover the gate and penetrate into the clearance gaps between the adjacent faces on the coupling member and the groove in the gate. The invention also comprises a coated gate formed by the process described.

REFERENCES:
patent: 3738383 (1973-06-01), David
patent: 3742995 (1973-07-01), Confer et al.
patent: 3763880 (1973-10-01), Leopold et al.
patent: 4214604 (1980-07-01), Rumsey
patent: 4226550 (1980-10-01), Kupcak et al.

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