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Old 08-06-2011, 11:28 PM
Wet_Boots's Avatar
Wet_Boots Wet_Boots is offline
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Join Date: Mar 2005
Location: metro NYC
Posts: 44,016
There is absolutely nothing vague about "follow manufacturer instructions" ~ if you got an RPZ in a system you care for, you take on some or all of the responsibility for its surviving the winter undamaged. Anyone with tens of thousands of dollars worth of backflow preventers in their care does well to winterize them according to mfr instructions.

If that is more than you can handle, then someone else should do the work, and take the responsibility, and the service income.
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