Item - Check Valves Check Valve, Flow Design Single, Mechanism and Body Design Y, Body Material - Valves PVC, Pipe or Tube Size 1/2 in, Connection Type Spigot x Spigot, Seal Material EPDM, Max. Temp. - Valves 140 Degrees F, Max. Steam Pressure - Valves Not Rated, Seat Material EPDM, Application - Valves General Purpose, Length 5 5/8 in, Width 1 57/64 in, Overall Height 2 63/64 in, Standards ASTM