D4481 Safety Relief Valve 1-1/2 x 2 In 100 psi

D4481 Safety Relief Valve Body Material Bronze Inlet Type MNPT Outlet Type FNPT Inlet Size 1 1/2 in Outlet Size 2 in Factory Set Pressure 100 psi Disc Material B21 Alloy 485 Overall Height 10 5/8 in Application Pressure Reducing Stations etc Steam Boiler and Generators Overall Length 5 1/2 in Seat Material EPR Spring Material Stainless Steel Temp Range -60 Degrees to 406 Degrees F Test Lever Yes Standards ASME Section 1 ASTM A-313 TY 631 National Board Certified Steam