| 摘要 |
<p>A triple offset butterfly valve comprises a valve body (10) defining a valve orifice and a valve member rotatably mounted in the valve orifice. The valve member (11) comprises a disc element (13) detachably mounted to a mounting plate (14), the valve member (11) being mounted to a rotatable axle (12) which extends between the disc element (13) and mounting plate thereof, the valve body (10) comprising an annular valve seat (17) against which the disc element (13) of the valve member seals when the valve is closed. In use, when the valve components become worn, the disc element (13) of the valve member (11) can easily be removed as a complete unit and replaced. In this manner the need for a removable seal on the valve member is avoided, thereby reducing the number of potential leak paths compared with known butterfly valves.</p> |
