The Apollo™ Model RP4A and RPLF4A Lead Free Reduced Pressure Backflow Preventer A Series provide maximum protection of the potable water supply due to back-siphonage or backpressure from substances that are hazardous to the potable water supply. The top accessed modular check valve cartridges provide captured springs, replaceable seats, and reversible silicone seat discs.
Apollo™, 4ALF207A2F, Backflow Preventer, Series: 4ALF-200 LBF, 1-1/2 in Nominal, 175 psi Pressure, 33 to 180 deg F, Reduced Pressure Backflow, Bronze Body, 18 in W x 9-7/8 in H Dimensions, Domestic