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#3
02-20-2002, 08:18 PM
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input needed on back flow valve
DONT USE A BACK FLOW VALVE. They dont work over time, just ask my carpet. At the top most part of your return lines, just below the water level, put a small hole 1/16th or so. Then when the power goes out, the water level will only drop as far as the hole, because it starts to suck air.
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