Cla-Val 3450AR-116 Air Release Valve 1/2"

Cla-Val Air Release Valves (ARVs) are built with stainless steel trim to insure years of maintenance free service on water systems. ARVs are float operated and have a resilient orifice button for water tight shut off. Model number and working pressure (psi) are shown on the metal tag on each ARV. According to AWWA Std’s C512-92

Note: These ARVs are not recommended for raw sewage use or fluids containing a major percentage of suspended solids. For this service use Series 34WW ARVs.

ARVs operate automatically to release pockets of air from high points of water system (See fig. 1 & 2). ARVs are initially normally open and will vent air thru the orifice as the water system is filled with fluid. As the fluid level rises in the ARV so does the float to shut off the orifice. Subsequently as air in the system collects in the ARV, the fluid is displaced, allowing the float to drop, opening the orifice and the collected air pocket is vented. The cycle is continually repeated automatically, as air collects in the ARV.