Apparatus for locking a ball valve element in one position

Details Apparatus for locking a ball valve element in one position Apparatus for locking a ball valve element in one position

1981-08-07

1983-09-27

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

166240, E21B 3414

Patent

active

044063288

ABSTRACT:
A ball valve assembly is provided having an internally projecting pin on the actuating sleeve element for the ball valve which engages a recessed shoulder in the periphery of the valve to prevent accidental displacement of the ball valve from its fully open position.

REFERENCES:
patent: 4289165 (1981-09-01), Fredd
patent: 4293038 (1981-10-01), Evans

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