D4559 Adjustable Relief Valve Body Material Bronze Inlet Type MNPT Outlet Type FNPT Inlet Size 2 in Outlet Size 2 in Factory Set Pressure 100 psi Pressure Range 51 to 100 psi Disc Material 316 Stainless Steel Overall Height 11 1/8 in Application Liquids Seat Material 316 Stainless Steel Spring Material 316 Stainless Steel Temp Range 0 Degrees to 450 Degrees F Test Lever No