PRESSURIZED VALVE SEAL

摘要

A valve having a body (12) including a fluid passage (14), a valve seat (16) defining an orifice and including a sealing gland (20) having a support surface. The support surface (26) includes a notch (28). A resilient valve seat member (22) is disposed within the sealing gland. The valve includes a valve sealing member (32) 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 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.