Dynamic ball valve sealing device for three-way valves

Details Dynamic ball valve sealing device for three-way valves Dynamic ball valve sealing device for three-way valves

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 11/087 (2006.01) F16J 15/50 (2006.01) F16K 5/20 (2006.01)

Patent

CA 2633972

A ball valve having improved sealing between the valve member and the valve body is presented. Improved sealing is realized by providing a sealing member that is allowed to float on the outer surface of the valve member in the closed position. By being able to float on the outer surface, the sealing member can compensate for any variations in the valve member as a result of machining tolerances or variations in position of the valve member due to changes in pressure within the valve, thereby providing dynamic sealing The dynamic sealing is also provided by configuring the valve member such that it causes the sealing member to be exposed to a higher biasing force in the closed position than in the open position.

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