Safety Relief Valve Body Material Stainless Steel Inlet Type FNPT Outlet Type MNPT Inlet Size 1/2 in Outlet Size 1/2 in Factory Set Pressure 25 psi Disc Material Stainless Steel Overall Height 4 in Application A General Utility Valve of all Stainless Steel (SS) Construction Including Spring For Liquid Overall Length 2 1/8 in Seat Material PTFE Spring Material Stainless Steel Temp Range -60 Degrees to 406 Degrees F Test Lever No