| 摘要 |
A rotary plug valve has a tapered plug (473) received within a frusto-conical chamber in a valve housing (414). A liner between the plug (473) and chamber wall comprises a rigid metal body (472) having sealing sleeves (481, 486) of plastics material to provide a seal with the plug and the chamber wall. The sleeves are retained by lips (482) provided in the metal body. The liner and plug are removable as a unit (471) from the chamber in the valve housing (414). |
