{"product_id":"barbed-irrigation-non-return-valves-13-mm-19-mm","title":"Barbed Irrigation Non-Return Valves | 13, 19 \u0026 25 mm","description":"\u003cp\u003e\u003cstrong\u003eBarbed irrigation non-return valves\u003c\/strong\u003e help maintain a preferred flow direction in a compatible hydroponic water-supply line by resisting reverse flow when pump pressure falls. They are useful when maintaining or extending a grow room watering layout.\u003c\/p\u003e\u003ch2\u003eAvailable sizes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e13 mm:\u003c\/strong\u003e one inline valve for compatible 13 mm flexible irrigation tubing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e19 mm:\u003c\/strong\u003e one inline valve for compatible 19 mm flexible irrigation tubing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25 mm:\u003c\/strong\u003e a larger inline valve for compatible 25 mm irrigation supply pipe.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation\u003c\/h2\u003e\u003cp\u003eMeasure the tube's actual internal diameter, check the valve's direction-of-flow marking and secure the barbed connections as directed by the equipment manufacturer. Inspect for leaks during testing and confirm the valve's pressure suitability for the system. These irrigation fittings are not certified potable-water backflow prevention devices.\u003c\/p\u003e\u003ch2\u003eWhat's supplied?\u003c\/h2\u003e\u003cp\u003eOne non-return valve in the selected nominal size. Pipe, clamps, filters and pumps are sold separately. The exact rated materials, pressure limits and individual packed shipping weight need verification before publication.\u003c\/p\u003e","brand":"Unbranded","offers":[{"title":"13 mm","offer_id":56397108445569,"sku":"13MM-NON-RETURN-VALVE","price":6.0,"currency_code":"GBP","in_stock":true},{"title":"19 mm","offer_id":56397108478337,"sku":"19MM-NON-RETURN-VALVE","price":6.0,"currency_code":"GBP","in_stock":true},{"title":"25 mm","offer_id":56397714915713,"sku":"25MM-NON-RETURN-VALVE","price":11.5,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/steelroots.co.uk\/products\/barbed-irrigation-non-return-valves-13-mm-19-mm","provider":"Steel Roots ","version":"1.0","type":"link"}