Item - Check Valves Check Valve, Mechanism and Body Design Union Check Valve, Body Material - Valves PVC, Pipe or Tube Size 1 1/2 in, Connection Type Compression x Compression, Mounting Orientation Horizontal, Vertical, Max. Temp. - Valves 130 Degrees F, Max. Water Pressure - Valves 50 psi, Full Flow - Valves Yes, Application - Valves Plumbing, Length 10 1/2 in, Standards CE, CSA, NSF, UL