| 摘要 |
<p>The shut-off ball valve has a housing (2, 4) with pref. a ball (6) resting on two O-rings (20, 22) made of plastics. The two O-rings each have a sealing lip (48) resting essentially tangentially on the ball surface. The lip's (4) radially-directed interface (46) has a base (44). As the load increases, the lip interface is pushed radially sideways. At high loads, the ball (6) is supported by the interface zone.</p> |
