Netafim 1in Guardian Air/Vacuum Relief Air Vent

Guardian Air Vents from Netafim provide maximum protection with proper placement in your irrigation system. The large capacity vents provide outstanding performance in venting air at start-up and preventing vacuum issues at shutdown. Guardian Air Vents are used downstream of valves, at the manifolds to break vacuum at system shutdown and on any sloping terrain to prevent vacuum issues when pipes drain. Also used upstream of valves to release air at system start-up.