Watts RBFF Part of the RBFF Series Z100F 4NH Z645 4IC G Z645 4IC G Specifications Body Material Brass Brand Watts EAN 098268007220 Inlet Connection Size 3 4 IN Inlet Connection Type Male Threaded Inlet Thread Type NPT Lead Free NO Maximum Temperature Fahrenheit 210 Maximum Working Pressure PSI 125 Outlet Connection Size 3 4 IN Outlet Connection Type Female Threaded Outlet Thread Type NPT Part Number 0066109 Pressure Range 75 to 150 PSI Pressure Relief Setting PSI 125 Protection Type Temperature And Pressure Series 100XL Shank Length 1 1 8 IN Temperature Relief Fahrenheit 210 Thermostat Probe Length 8 IN Specification Sheet 1L it eliminates up to twelve 1 2 inch fittings in a compact package while the one piece construction eliminates up to eleven threaded joints For air charge servicing and maintenance it also has a drain port with integral ball valve for unloading pressure from waterside of expansion tank diaphragm