D6758 Safety Relief Valve Body Material Bronze Inlet Type FNPT Outlet Type MNPT Inlet Size 1-1/4 In. Outlet Size 1-1/4 In. Factory Set Pressure 150 psi Pressure Range 10 to 250 psi Disc Material Bronze Overall Height 9 In. Application Steam Boiler Pressure Reducing Stations OEM Equipment etc Overall Length 3-1/8 In. Seat Material EPDM Spring Material Stainless Steel Temp Range -20 Degrees to 406 Degrees F Test Lever Yes Standards ASME Steam Service