| 摘要 |
An interchangeable sanitary part in the form of a check valve including an outer housing ( 3 ) which can be inserted into a fluid line and has at least one peripheral seal ( 20, 21 ) on its outer circumference, which seals the outer housing ( 3 ) and the fluid line against each other. In order to avoid using additional O-rings, the at least one seal ( 20, 21 ) for providing linear or planar sealing is produced from the same material as the outer housing and forms a single element with the outer circumference of the housing. A least one peripheral sealing lip ( 8 ) located on the inner surface of the outer housing ( 3 ) is provided which is formed of the same material as the outer housing. The free end of the sealing lip ( 8 ) protrudes in such a way that, when the check valve is closed, the lip acts on the closing part ( 4 ) or the inner surface of the outer housing ( 3 ) in a sealing manner.
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