VALVE CAP WITH INTEGRAL SEAL

摘要

A valve cap (14) can be configured to have an integral sealing member (50) at least part of which is extendable into an opening (18) of a valve body (12) and seals against an inner surface of a valve body wall (16). The sealing member (50) is configured to have a void space (51) such that when fluid leaks from a valve stem disposed in the valve body (12), an internal pressure in the void space forces a surface of the sealing member (50) against the inner surface of the valve body wall (16), thereby tightening a seal between the sealing member (50) and the valve body wall (16). In such circumstances, the fluid is prevented effectively from exiting the valve cap (14).