Plug valve with removable lip insert means

Details Plug valve with removable lip insert means Plug valve with removable lip insert means

1982-11-01

1984-10-23

Schwadron, Martin P.

Valves and valve actuation

Rotary valves

Plug

251314, F16K 502

Patent

active

044783884

ABSTRACT:
A plug valve and method of making same are provided wherein such valve has lip inserts removably installed between an outer housing of the valve and diametrically opposed ports in a plastic sleeve which serves as a liner for the inside surface of the outer housing. The ports are aligned in a flow passage through the valve and a rotatable plug member is rotatably supported within the sleeve. The lip inserts serve the multiple purpose of protecting edge surfaces defining the ports of the sleeve against impingement of fluid flowing through the flow passage, holding the sleeve against rotation, preventing cold flow or extrusion of parts of the plastic sleeve in the flow passage and providing smooth uninterrupted flow of fluid through the valve flow passage.

REFERENCES:
patent: 2529412 (1950-11-01), Parker

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