Febco FRK 805YD 806YD 825YD 826YD RC 4 Part of the RK 805YD 806YD 825YD 826YD Series snake fencing Specifications Adjustable Reduced Pressure Range Specifications Adjustable Reduced Pressure Range 1 to 25 Body Material Brass Brand Watts Corrosion Resistant Coating No Disc Material Buna N EAN 098268428834 Gauge Option No Gauge Inlet Connection Size 3 8 IN Inlet Connection Type Female Threaded Inlet Thread Type NPT Lead Free YES Maximum Operating Temperature Fahrenheit 140 Maximum Working Pressure BAR 20 This 4 inch reduced pressure detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements Cover O ring Assembly reduced pressure zone assembly or reduced pressure detector assembly