| 摘要 |
<p>A valve assembly for securing a valve cover to a valve body with fastening elements which are free of tensile stress is disclosed, comprising a valve body having an inlet and an outlet and a fluid flow passage extending therebetween; a valve member movably disposed within the flow passage of the valve body, the valve member being operstive to control fluid flow through the flow passage in accordance with the position of the valve member relative to the valve body, the valve body having an access opening for assembling and accessing the valve member; an actuating shaft affixed to the valve member, the actuating shaft being adapted to mechanically interface with an actuating element positioned external to the valve body for effectuating movement of the valve member within the valve body; cover means secured to the valve body for covering and sealing the access opening, the cover means including an opening for the actuating shaft; fastening elements for securing the cover means to the valve body; and means for sealingly closing the access opening with the cover means without the application of tensile stress to the fastening elements.</p> |
