Adjustable Antisiphon Relief Valve Body Material Polypropylene Inlet Type FNPT Outlet Type FNPT Inlet Size 1 1/2 in Outlet Size 1 1/2 in Pressure Range 5 to 100 psi Overall Height 12 in Application Concentrated Etchants Ultra-Pure Water Water Overall Length 5 in Seat Material PTFE Spring Material Zinc-Plated Steel Temp Range 32 Degrees to 180 Degrees F Test Lever No