air vacuum relief valve,air release valve 1. high durable 2.smooth operation 3. size: 1" - 2" inlet Slam Resistant Air Release Valve (Air Vacuum Relief Valve) 150 PSI RatedWe've been producing & exporting "VRV Series Air Release Valves" in large quantities to many professional customers for irrigation industry worldwide.1. Features:(1) Admits large volume of air into pipelines to prevent vacuum ...
