{"product_id":"valvula-antirretorno-john-guest","title":"Non-Return Valve","description":"\u003ch2\u003eJohn Guest check valve\u003c\/h2\u003e\u003cp\u003eIn-line valve designed to allow flow in one direction and limit return flow in the opposite direction within a compatible installation.\u003c\/p\u003e\u003ch3\u003eMeasurements\u003c\/h3\u003e\u003cp\u003eAvailable for 3\/8\" and 5\/16\" tube, depending on the variant.\u003c\/p\u003e\u003ch3\u003eApplication\u003c\/h3\u003e\u003cp\u003eUsed when you need to control the flow direction and reduce unwanted backflow within a line.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eDepressurize, identify the valve’s functional direction, cut the tubes straight and insert fully. Check operation and leak tightness before putting into service.\u003c\/p\u003e\u003ch3\u003eMaintenance\u003c\/h3\u003e\u003cp\u003eIf you notice restriction or abnormal backflow, check the valve’s orientation, cleanliness and condition. Do not assume that a check valve replaces other safety devices in the system.\u003c\/p\u003e\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat sizes are available?\u003c\/strong\u003e\u003cbr\u003e3\/8\" and 5\/16\".\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it have a flow direction?\u003c\/strong\u003e\u003cbr\u003eYes, the functional direction must be respected.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it a shut-off valve?\u003c\/strong\u003e\u003cbr\u003eNo; its function is non-return.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat should I check if no fluid is passing through?\u003c\/strong\u003e\u003cbr\u003eOrientation and possible obstructions.\u003c\/p\u003e","brand":"John Guest","offers":[{"title":"3\/8\"","offer_id":3377933189,"sku":"IB0588","price":2292.0,"currency_code":"JPY","in_stock":true},{"title":"5\/16''","offer_id":39581528850,"sku":"IB0589","price":2072.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0339\/9513\/files\/Valvula-Anti-Retorno.webp?v=1697719396","url":"https:\/\/installbeer.com\/en-jp\/products\/john-guest-non-return-valve","provider":"Install Beer","version":"1.0","type":"link"}