| 摘要 |
<p>The invention relates to a valve including a body (1), a butterfly plate (2), and an elastomeric seal (4) arranged in a recess (13) and including a dynamic sealing cross-section and a static sealing cross-section, the static sealing cross-section consisting of two flexible lips that define a space therebetween, said space being filled with a flowable material capable, and the body (1) having two through-holes (18, 18') pass therethrough, said through-holes leading into the recess (13), wherein one of the through-holes is plugged by a removable plug (20).</p> |
