Valve

Details Valve Valve

1982-09-13

1984-12-25

Weakley, Harold W.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251164, 251188, 251192, F16K 2500

Patent

active

044899157

ABSTRACT:
A rotary plug valve includes a rotary plug which has a relatively thin-walled valving portion. To lock the valve in position or to achieve leak tight closure of the valve, the rotary plug is subjected to pressure such that the wall of the thin-walled valving portion deflects outward to tightly contact the surrounding wall of the plug receiving cavity in the valve housing.

REFERENCES:
patent: 343283 (1886-06-01), Swabel
patent: 3193244 (1965-07-01), Smith
patent: 3260498 (1966-07-01), Johnson
patent: 3386700 (1968-06-01), Greene
patent: 3446234 (1969-05-01), Hungate
patent: 3485265 (1969-12-01), Buono
patent: 3529621 (1970-09-01), Christiansen

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