Ball valve loading apparatus

Details Ball valve loading apparatus Ball valve loading apparatus

1981-08-07

1983-11-15

Purser, Ernest R.

Wells

Valves, closures or changeable restrictors

Rotated operator

166386, 137629, 251160, E21B 3406

Patent

active

044150377

ABSTRACT:
A ball valve assembly is provided for elimination of the tearing of the annular elastomeric seal which normally engages the periphery of such ball valve due to the movement of the valve with excessive loading imposed on the elastomeric seal. A spring pressed element engages the portion of the ball opposite the position of the annular elastomeric seal and exerts a substantially constant loading force on the ball and hence on the elastomeric seal.

REFERENCES:
patent: 3667505 (1972-06-01), Radig
patent: 3993136 (1976-11-01), Mott
patent: 4325434 (1982-04-01), Roberts

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