Adjustable Antisiphon Relief Valve Body Material PVC Inlet Type FNPT Outlet Type FNPT Inlet Size 1/4 in Outlet Size 1/4 in Pressure Range 5 to 100 psi Overall Height 6 5/32 in Application Concentrated Etchants Ultra-Pure Water Water Overall Length 2 in Seat Material PTFE Spring Material Zinc-Plated Steel Temp Range 32 Degrees to 140 Degrees F Test Lever No