Ball valve

Details Ball valve Ball valve

1979-06-19

1981-10-27

Weakley, Harold W.

Valves and valve actuation

Impact type actuator

251 77, 251163, F16K 3144

Patent

active

042969131

ABSTRACT:
A ball valve having a floating ball and an actuator for rotating the ball reduces operating torques by imparting an initial movement to the ball other than in the valve opening and closing rotation. This initial movement overcomes the adhesion friction, facilitating opening of the valve. The initial movement may be imparted by an asymmetrical configuration in the actuator or ball or means of a spring interposed between the two.

REFERENCES:
patent: 2200474 (1940-05-01), Heggem
patent: 2847180 (1958-08-01), Ludeman
patent: 4029292 (1977-06-01), Kramer
patent: 4141536 (1979-02-01), Graham

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