Ball type valve with high pressure sealing capability

Details Ball type valve with high pressure sealing capability Ball type valve with high pressure sealing capability

1977-05-25

1979-02-27

Weakley, Harold W.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251163, F16R 2500

Patent

active

041415361

ABSTRACT:
An improvement of a ball type valve having capability of conventional closing by quarter turn rotation of the ball, plus pressure sealing of the valve when closed by rocking about a tangential axis. It provides improved structure that permits both the closing and the pressure sealing with less than a half turn of a control handle for each. It simplifies and strengthens the working parts compared to an earlier valve by the same inventor.

REFERENCES:
patent: 2200474 (1940-05-01), Heggem
patent: 2719022 (1955-09-01), Blevaus
patent: 2744720 (1956-05-01), Wilms
patent: 3033513 (1962-05-01), Vulliez
patent: 3473554 (1969-10-01), King
patent: 3941351 (1976-03-01), Graham

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