Adjustable Back Pressure Relief Valve Body Material PVC Inlet Type FNPT Outlet Type FNPT Inlet Size 2 in Outlet Size 2 in Pressure Range 5 to 100 psi Overall Height 15 in Application Acids Highly Corrosive Liquids Overall Length 5 1/2 in Seat Material Viton Spring Material Zinc-Plated Steel Temp Range 32 Degrees to 140 Degrees F Test Lever No