DRAIN PIPE BACKFLOW PREVENTION STRUCTURE AND BACKFLOW PREVENTION METHOD

To provide a backflow prevention structure etc. which has an immediate backflow prevention effect and can reliably prevent backflow in a drain pipe.SOLUTION: A backflow prevention structure 1 is provided with a knife gate valve 11 that can be opened and closed manually installed in a drain pipe 10 i...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KUSUMOTO HIDEKI, HIROMOTO SHINICHI, TAKAI TAKESHI, FURUKAWA TAISHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CESSPOOLS FIXED CONSTRUCTIONS SEWERAGE SEWERS WATER SUPPLY
Online-Zugang:	Volltext bestellen
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