F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
251/13
F16K 31/122 (2006.01) E21B 29/08 (2006.01) E21B 34/10 (2006.01) E21B 34/00 (2006.01)
Patent
CA 2009981
ABSTRACT A valve employing a coupling disk to rotate the valve member so that rotative force is applied to the valve member in a direction away from the sea-t during opening of the valve and/or in a direction toward the seat during closing of the valve. Closing force is provided by a spring in a dome chamber and a gas charge in the dome chamber. A float valve controls fluid entry into the dome chamber to trap the gas charge therein while permitting the introduction of liquid from a balance-closure assist line to increase the pressure of the gas charge and assist in closing the valve member.
Dickson Rennie L.
Godfrey Craig W.
Noack Timothy J.
Schwendemann Kenneth L.
Dickson Rennie L.
Godfrey Craig W.
Noack Timothy J.
Otis Engineering Corporation
Schwendemann Kenneth L.
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