Pressurized valve seal

Details Pressurized valve seal Pressurized valve seal

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 25/00 (2006.01) F16J 15/48 (2006.01) F16K 1/44 (2006.01) F16K 1/46 (2006.01)

Patent

CA 2382594

The present invention provides a valve comprising a body including a fluid passage, a valve seat, defining an orifice, and including a sealing gland including a support surface, the support surface including a notch, and a resilient valve seat member disposed within the sealing gland, and a valve sealing member disposed within the fluid passage and configured to seat against the valve seat member to effect sealing of the valve sealing member to the valve seat and thereby close the orifice, wherein the notch is configured to facilitate application of a fluid pressure on the valve seat member to prevent leakage through the orifice when the valve sealing member is seated against the valve seat member. In one embodiment, the notch is provided in the valve seat member and not the sealing gland support surface. A valve is also provided comprising a body including a fluid passage, a fluid pressure source. A valve seat is provided, defining an orifice, and including a sealing gland including a cavity. A resilient valve seat member is disposed within the sealing gland. A valve sealing member is disposed within the fluid passage and configured to seat against the valve seat member to effect sealing of the valve sealing member to the valve seat and thereby close the orifice. The sealing gland includes at least two spaced apart apertures communicating with the fluid pressure source, wherein the spaced apart apertures are configured to distribute fluid pressure within the cavity to act upon the valve seat member to prevent leakage through the orifice when the valve sealing member is seated against the valve seat member.

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