Pipe piece for introduction into a pipeline which can be closed at both ends

In the case of water-safeguarding systems, the pipelines of which can be closed at both ends and which exhibit a manually actuable valve which has a so-called displacement screwing arrangement, there is the danger that the quantity of water displaced upon closing the manually actuable valve builds u...

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1. Verfasser: HEYNE,ANTON
Format: Patent
Sprache:eng ; ger
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