Air- Vent valves are used in independent, central, radiant panel heating systems & HVAC
OPERATION: – When there is air in the Air-Vent Valve, the force of the float weight acts on the
lever which is integral with the plug, thus causing it to move down. Air valves are hydro mechanical devices designed to automatically release air and wastewater gases or admit air during the filling, draining or operation of liquid piping systems
for water and wastewater services.