Product can not ship to California, Vermont, and outside United States. Wilkins 1-1/2" 975XL Reduced Pressure Backflow PreventerThe Wilkins 1-1/2" 975XL Reduced Pressure Backflow Preventer is designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable water supply. Wilkins 1-1/2" 975XL Reduced Pressure Backflow Preventer Features: Maximum working water pressure 175 PSI Maximum working water temperature 180F Hydrostatic test pressure 350 PSI Full port QT ball valves (standard) ASSE Listed 1013 IAPMO Listed UL Classified (less shut-off valves or with OS&Y valves) C-UL Classified CSA Certified AWWA Compliant C511 Approved by the Foundation for Cross ConnectionControl and Hydraulic Research at the University ofSouthern California