Quote:
Originally Posted by jempat56
I’m not sure I understand your explanation. How can a pressure drop create a backflow unless the valve is actually open. Even then how much “contaminated” water is in the hose? I’ve never seen these backflow preventers anywhere till I got to the villages. Is this a local problem or just a fix for a non existent issue. Interested to hear your thoughts.
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Incase don’t shut valve off. Kinda like planets aligning all in row for it actually happen.