I-Backflow Preventor, TWS Valve
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Isivimbeli sokugeleza emuva, i-TWS Valve
Funda kabanziIsivimbeli sokugeleza kwamanzi esisetjenziselwa ukuphakelwa kwamanzi ukusuka edorobheni ukuya eyunithi ye-sewage jikelele sikhawulela khulu umfutho wephayiphi ukwenzela bona ukugeleza kwamanzi kube yindlela eyodwa kwaphela. Umsebenzi wayo kukhandela ukugeleza emuva kwephayiphi ye-medium nofana nanyana ngibuphi ubujamo bokugeleza emuva kwe-siphon, ukwenzela bona kugwenywe ukusilaphazeka kokugeleza emuva.
