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Old 08-13-2007, 02:57 PM   #4
mrJB
Senior Member
 
Join Date: Feb 2007
Location: O.C.
Posts: 352
Back-flow Preventer

HD/Lowes has two kinds and you probably got the wrong one (for a water line). Go into the sprinkler section and get one there. They are $3 and change and black in color; I've been using one for over a year with 100% success on a 360 gph pump through a scupper...
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