D4548 Adjustable Relief Valve Body Material Bronze Inlet Type MNPT Outlet Type FNPT Inlet Size 3/4 in Outlet Size 3/4 in Factory Set Pressure 150 psi Pressure Range 126 to 150 psi Disc Material Bronze Overall Height 6 in Application Liquids Seat Material Bronze Spring Material 316 Stainless Steel Temp Range 0 Degrees to 450 Degrees F Test Lever No