Caleffi 1/2" Threaded 574 Brass RPZ Backflow Preventer w/ AutoFill Combo (Lead Free)

574 AutoFill Combo Pre-adjustable automatic filling valve with backflow preventer Low lead brass body Max. inlet pressure: 150 psi. Max. working temperature: 150°F. Setting pressure range: 3-60 psi. Preset outlet pressure: 15 psi. Pressure gauge scale: 0-60 psi / 0-4 bar Compliance with the following standards: ASSE 1013 NSF/ANSI 372 - 2016, Drinking Water System Components - Lead Content Reduction of Lead in Drinking Water Act, California Health and Safety Code 116875 S.3874, Reduction of Lead in Drinking Water Act