| 摘要 |
1. Ball valve having a housing, comprising a tubular end section (1', 31") and a central section (1, 31) which is broader than the end section and is connected to the end section by way of a conical intermediate section (12, 31') which has a cone angle of at least 30 , and having a ball (6) which is mounted in the central section, is rotatable from outside by means of an operating bolt (4) and is sealed by means of at least one sealing ring (10) arranged in a support component (11, 32, 42) which is supported against the housing, characterised in that (a) the entire housing (1, 12, 1'; 31, 31', 31") with end sections adjoining either side of the central section by way of conical intermediate sections is constructed in one piece without welding ; (b) the ball (6) is accommodated between two sealing rings (10) each of which is arranged in a support component (11, 32, 42), and (c) the support components are supported against the conical intermediate sections (12, 31') in such a manner that they are sealed. |
