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#4
11-23-2015, 04:47 AM
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You could also put a flap checkvalve right on the output of the pump. The weight of the water in the return line will shut the valve when the water stops preventing the back siphon. I know alot of people don't use them but I put them in all my systems and have yet to have one fail. Combine that with a siphon break hole up top and you should be pretty safe all round.
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