发明授权
US4531537A Plug valve for reduced leakage 失效
旋塞阀减少泄漏

Plug valve for reduced leakage
摘要:
A plug valve has an actuating stem which is non-integral with the valve plug. The actuating stem is axially movable with respect to the valve plug to compressingly and sealingly engage an external sealing member in response to fluid pressure. The plug wedges itself into sealing engagement in response to fluid pressure.
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