| 摘要 |
<p>A soft-sealing, concentric butterfly valve (10) for mounting with couplings or flanges is described, comprising a valve housing (12) with a through running boring (14), in which a rotary damper (16) is mounted to a spindle (18) and is arranged standing in a circular-cylindrical valve seat (20) and the valve seat (20) is equipped internally with conical contact surfaces (20a) for the damper (16). The valve housing (12) comprises on a first side (12a) a coupling end piece (22) and the valve housing (12) is on the opposite side (12b) equipped with several threaded bolt holes (24) arranged radially around the through running boring (14). A removable coupling part (40) comprising a second end coupling piece (42) is fitted to the other side (12b) of the valve housing (12) and the coupling part (40) is fastened to the valve housing (12) with the help of bolts (50) inserted in the threaded bolt holes (24), and also that the valve seat (20) is placed between the valve housing (12) and the coupling part (40) and surrounds the damper (16).</p> |
