Reduce Pressure Zone (RPZ)
Ames Series 4000B-FP and LF4000B-FP Reduced Pressure Zone (RPZ) Backflow Preventers are designed to prevent polluted water from entering into the potable water supply due to backsiphonage. These reduced pressure zone devices come with threaded or grooved gear operated ball valve shutoffs, and they have a single access cover for easy maintenance. The LF4000B-FP Series is certified Lead Free. Shop Backflow Direct’s collection of high-quality RPZ backflow preventers today.