| 摘要 |
<p>In a butterfly valve of the intermediate flange type a sealing sleeve (12) for the turnable plate (18) is mounted in the surrounding valve housing (8) without any particular holding engagement therewith. Instead, there is mounted in each of the opposed ends of the sleeve (12) a reinforcing ring (22, 24 or 28) seated in a holding groove in a manner such that the sealing sleeve (12) can be mounted around the valve plate (18) in being heeled over the associated valve shaft (20), and yet be stabilized by means of the reinforcing rings. The valve is well suited to satisfy high hygienic requirements.</p> |
