Although backflow preventers are more common at commercial buildings that have fire sprinkler systems, residential customers may need one, too, depending on local regulations. Homes that have ...

Cover all the pool PVC pipes that are exposed. You can use blankets, sweaters or anything thick. You don’t want to use anything thin. Then you’ll want to take a tarp or something plastic to protect it ...

Starting with your sprinkler system, Woodard says to completely ... turn the test ports to release any water that is in the backflow preventer. For a visual, here’s a report from KHOU 11 ...