Adjustable Relief Valve Body Material PVC Inlet Type FNPT Outlet Type FNPT Inlet Size 1 1/2 in Outlet Size 1 1/2 in Factory Set Pressure 25 psi Pressure Range 5 to 75 psi Disc Material PVC Overall Height 13 1/4 in Overall Length 4 5/16 in Seat Material EPDM Spring Material Coated Stainless Steel Temp Range 40 Degrees to 140 Degrees F Test Lever No