Temporary Backflow Draining

Backflow draining instructions:

Every autumn we start to get cold fronts that bring us periodic freezing temperatures.  During these periods of cold weather it is critical that you, the homeowner, temporarily drain your backflow preventer so that it doesn’t freeze and crack.  Repairing or replacing broken backflow preventers can be very costly to homeowners. If you are unsure how to do this please take a few minutes and review the following documents (click on each document to enlarge).

Reduced Pressure (RP) zone assemblies

Pressure Vacuum Breaker (PVB)

Ball Valves