{"product_id":"toro-irrigation-air-vacuum-valves-vacuum-breaker","title":"Toro Irrigation Air\/Vacuum Valves - Vacuum Breaker","description":"\u003cp\u003eAir and vacuum control is essential to the safety, longevity, efficiency and performance of an irrigation system. Air must be allowed to exit pipelines: 1) upon startup to prevent water hammer, 2) during normal operation to prevent the development of air pockets, and 3) air must be allowed to enter pipelines and laterals at shut down to prevent vacuum suction. Various types of valves and vents are available to perform these functions.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eRemoval of air from pipelines\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003eAvoid water hammer:\u003cbr\u003eAir must be allowed to escape pipelines at the same rate as water enters the pipeline during system startup to avoid dangerous water hammer from occurring.\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eRemove entrained or dissolved air:\u003cbr\u003eAir that has accumulated at high points during system operation must be allowed to escape to avoid air pockets which restrict the flow of water and can cause water hammer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eAllow the entry of air into pipelines\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003ePrevent vacuum suction in pipelines:\u003cbr\u003eAir must be allowed to re enter main and submain pipelines as water drains during system shut down to prevent negative suction from occurring and potential collapse of the pipelines.\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003ePrevent vacuum suction in laterals:\u003cbr\u003eLaterals which are buried or submerged in water may ingest dirty water and\/ or soil through the emitters as a result of vacuum suction if air is not allowed to enter the laterals during system shut down and drainage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cb\u003e1\/2'' VACUUM BREAKER\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cb\u003eThe ½'' air and vacuum release valve is specifically designed to prevent soil ingestion of emitters from back siphoning.\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"text-align: left;\"\u003eLarge air passage.\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eHigh resistance to chemicals.\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eSmooth, reliable operation.\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eEasy to handle and maintain.\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003ePlastic construction.\u003c\/li\u003e\n\u003cli style=\"text-align: left;\"\u003eBuna-N Seal system shutdown.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot2026-07-31at2.42.27PM.png?v=1785501755\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot2026-07-31at2.42.27PM.png?v=1785501755\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot2026-07-31at2.41.52PM.png?v=1785501945\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot2026-07-31at2.42.49PM.png?v=1785501776\" alt=\"\"\u003e\u003c\/p\u003e","brand":"toro.com\/agriculture","offers":[{"title":"Default Title","offer_id":53547463180582,"sku":null,"price":33.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot2026-07-31at2.37.24PM.png?v=1785501641","url":"https:\/\/evergreenbotany.com\/cs\/products\/toro-irrigation-air-vacuum-valves-vacuum-breaker","provider":"EVERGREEN","version":"1.0","type":"link"}