D4557 Adjustable Relief Valve Body Material Bronze Inlet Type MNPT Outlet Type FNPT Inlet Size 1 1/4 in Outlet Size 1 1/4 in Factory Set Pressure 200 psi Pressure Range 151 to 200 psi Disc Material 316 Stainless Steel Overall Height 8 1/2 in Application Liquids Seat Material 316 Stainless Steel Spring Material 316 Stainless Steel Temp Range 0 Degrees to 450 Degrees F Test Lever No