Adjustable Antisiphon Relief Valve Body Material PVC 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 Water Ultra-Pure Water Concentrated Etchants Overall Length 5 In. Seat Material PTFE Spring Material Zinc-Plated Steel Temp Range 32 Degrees to 140 Degrees F Test Lever No