Apollo 694ALF205A2B 1 in. Reduced Pressure Backflow Preventer Lead Free Black

This item with threaded connections is designed to prevent the back flow of polluted water from entering into the potable water supply due to back siphon-age and or backpressure. It has top mounted test cocks for easy testing. Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California.