Safety Relief Valve Body Material Bronze Inlet Type FNPT Outlet Type FNPT Inlet Size 2 in Outlet Size 2 in Factory Set Pressure 50 psi Pressure Range 15 to 160 psi 7 589 000 BtuH Disc Material Brass ASTM B16 Overall Height 14 in Application Hot Water Heating Boilers and Hot Water Supply Systems Overall Length 7 3/16 in Seat Material Silicone Spring Material Plated Alloy Steel Temp Range 0 Degrees to 250 Degrees F Test Lever Yes Standards ASME Section IV CRN CSA