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Old 08-07-2011, 09:40 AM
Wet_Boots's Avatar
Wet_Boots Wet_Boots is online now
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Join Date: Mar 2005
Location: metro NYC
Posts: 41,084
Field experience is fine when you can afford to waste a few RPZs, but I have yet to ever hear how a backflow preventer died over the winter after having been voided of water according to mfr instructions (and valves and drains set to prevent the entry of water into the winterized plumbing)
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