{"product_id":"toro-irrigation-air-vacuum-valves","title":"Toro Irrigation Air\/Vacuum Valves - Continuous Acting Air Release Valves","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\u003eCONTINUOUS ACTING AIR RELEASE VALVES\u003c\/b\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cb\u003e1'' and 2'' combination large volume air relief and continuous acting air release and vacuum relief valve.\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstall at highest points on filter and pump stations to provide both instantaneous and continuous air relief.\u003c\/li\u003e\n\u003cli\u003eInstall on main manifolds every 1000 feet to introduce air into the irrigation system at shutdown to prevent pipe collapse.\u003c\/li\u003e\n\u003cli\u003eInstall at highest point of slope to provide vacuum relief at system shutdown.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot2026-07-31at11.51.17AM.png?v=1785491485\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot_2026-07-31_at_11.52.55_AM.png?v=1785491857\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003eARV-1-A 1'' automatic continuous acting air release valve\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot2026-07-31at12.01.18PM.png?v=1785492175\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot2026-07-31at12.01.38PM.png?v=1785492249\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot2026-07-31at12.06.27PM.png?v=1785492623\" alt=\"\"\u003e\u003cbr\u003eARV-2-KA 2'' combination large volume automatic and kinetic air and vacuum release and continuous acting air release.\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot_2026-07-31_at_12.08.30_PM.png?v=1785492836\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot_2026-07-31_at_12.08.41_PM.png?v=1785492963\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot_2026-07-31_at_12.09.05_PM.png?v=1785493184\" alt=\"\"\u003e\u003c\/p\u003e","brand":"toro.com\/agriculture","offers":[{"title":"1'' continuous air release \/ 20","offer_id":53547280564518,"sku":null,"price":3173.0,"currency_code":"CAD","in_stock":true},{"title":"2'' combination automatic and kinetic air and vacuum release \/ 8","offer_id":53547280597286,"sku":null,"price":3122.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/5730\/1030\/files\/Screenshot_2026-07-31_at_11.52.55_AM.png?v=1785491857","url":"https:\/\/evergreenbotany.com\/zh-hant\/products\/toro-irrigation-air-vacuum-valves","provider":"EVERGREEN","version":"1.0","type":"link"}