' Safety Relief Valve, Body Material Bronze, Inlet Type FNPT, Outlet Type FNPT, Inlet Size 1 In., Outlet Size 1 In., Factory Set Pressure 150 psi, Pressure Range 15 to 160 psi, 5, 044, 000 BtuH, Disc Material Brass ASTM B16, Overall Height 6-11/16 In., Application Hot Water Heating Boilers and Hot Water Supply Systems, Overall Length 4 In., Seat Material Silicone, Spring Material Plated Alloy Steel, Temp. Range 0 Degrees to 250 Degrees F, Test Lever Yes, Standards ASME Section IV, CSA, CRN '