Rotary plug valve

Details Rotary plug valve Rotary plug valve

1975-04-24

1977-04-05

Cline, William R.

Valves and valve actuation

Limit stop

Adjustable

251288, 251317, 251368, 251309, 251192, F16K 5100

Patent

active

040158160

ABSTRACT:
A rotary plug valve in which the plug has a special sealing means in its outer surface to contact the wall of the plug chamber in encircling relation to the inlet flow port of the valve body when the plug is in closed position, said sealing means including a generally circular disk having limited inherent resiliency seated in a recess in the plug and provided with a generally circular rib on its front side to encircle said flow port in sealing contact with the wall of the plug chamber. One form of disk also has a circular rib on its rear side to contact the bottom wall of said recess. An arcuate wire stop element coactive with a knob on the valve plug and having end portions insertable into recesses in the valve body is provided for stopping rotation of the plug selectively in different positions.

REFERENCES:
patent: 2433732 (1947-12-01), Brown
patent: 3254872 (1966-06-01), Roos
patent: 3343802 (1967-09-01), Schuilwerve
patent: 3360236 (1967-12-01), Hulslander
patent: 3787028 (1974-01-01), Semon
E.L. Carlotta, "Synthetic Rubber O-Ring Seals", Product Engineering Magazine, June, 1951, pp. 130-135.

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