While designed for hot water at 90 PSI

What is the difference between the 392877 and the 392877/U

eliminating the risk of premature burnout during high-demand cycles

Rugged Construction: Steel enclosure with knockouts simplifies conduit banking and protects internal components from debris

Watts 0385496 Tester R-410A While designed for hot waterProfessional field testing of backflow prevention assemblies requires precision equipment that holds up to the rigors of the job site. The Watts 0385496 TK 9A Backflow Preventer Test Kit is the industry standard for verifying the performance of Reduced Pressure Zone (RPZ) assemblies, Double Check Valve Assemblies (DCVA), and Pressure Vacuum Breakers (PVB). Engineered for backflow testing compliance with ASSE 5000 and USC standards, this analog