{"product_id":"pa66-fuel-line-check-valve-3-2-7-9mm-for-diesel-vacuum","title":"PA66 Fuel Line Check Valve (3.2-7.9mm) for Diesel \u0026 Vacuum | Atradesen","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0739\/2588\/6118\/files\/pa66-fuel-line-check-valve-3-2-7-9mm-for-diesel-vacuum_008.png?v=1792574002\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0739\/2588\/6118\/files\/pa66-fuel-line-check-valve-3-2-7-9mm-for-diesel-vacuum_009.png?v=1792574002\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"atradesen-pdp\" style=\"font-family: sans-serif; line-height: 1.6; color: #333;\"\u003e\n\u003cdiv style=\"background: #eef7ff; border: 1px solid #b8daff; padding: 10px 14px; border-radius: 6px; margin-bottom: 15px; font-size: 14px;\"\u003e\n\u003cstrong\u003eNeed Reinforced Fuel Lines or Mini Hose Clamps?\u003c\/strong\u003e Pair this check valve with our fuel-safe accessories: \u003ca href=\"https:\/\/atradesen.com\/collections\/hoses-pneumatics-quick-connects\" style=\"color: #0056b3; font-weight: bold; text-decoration: underline;\"\u003eExplore Fuel-Resistant Hoses \u0026amp; Hose Clamps at Atradesen.com\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch2\u003eHeavy-Duty PA66 Nylon Fuel \u0026amp; Vacuum Inline Check Valve\u003c\/h2\u003e\n\u003cp\u003eDesigned for demanding fluid circuits, this high-performance inline non-return valve from \u003cstrong\u003eAtradesen.com\u003c\/strong\u003e ensures reliable one-way flow with zero backflow leakage. Constructed with an engineering-grade PA66 nylon body, an acid-and-oil-resistant FKM (Viton) diaphragm seal, and a 316 stainless steel internal spring, it withstands severe hydraulic shock and extreme operating temperatures from -60°C to 120°C.\u003c\/p\u003e\n\u003cdiv style=\"background: #fff3cd; border-left: 4px solid #ffc107; padding: 12px; margin: 15px 0; font-size: 13px; color: #856404;\"\u003e\n\u003cstrong\u003e⚠️ Barb Sizing \u0026amp; Pressure Ratings Guide:\u003c\/strong\u003e\u003cbr\u003e• \u003cstrong\u003eHose Compatibility:\u003c\/strong\u003e Barb size indicates the \u003cstrong\u003eInside Diameter (ID)\u003c\/strong\u003e of your flexible tubing: 3.2mm (1\/8\") | 4.8mm (3\/16\") | 6.4mm (1\/4\") | 7.9mm (5\/16\").\u003cbr\u003e• \u003cstrong\u003eLow Cracking Pressure:\u003c\/strong\u003e Opens effortlessly at \u003cstrong\u003e≥ 0.003 MPa (0.43 PSI)\u003c\/strong\u003e, ensuring smooth flow without straining low-pressure pumps.\u003cbr\u003e• \u003cstrong\u003eWorking Pressure Limits:\u003c\/strong\u003e Rated for liquid pressure up to \u003cstrong\u003e0.6 MPa (87 PSI)\u003c\/strong\u003e and air\/gas pressure up to \u003cstrong\u003e0.3 MPa (43.5 PSI)\u003c\/strong\u003e. For high-pressure lines, secure tubing with hose clamps.\u003c\/div\u003e\n\u003ch3\u003eEngineered Advantages\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel \u0026amp; Chemical Immunity:\u003c\/strong\u003e Viton (FKM) seal and PA66 housing resist gasoline, diesel, biodiesel, motor oil, weak acids, alkalis, and brake fluids without swelling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Frequency Durability:\u003c\/strong\u003e 316 stainless steel internal spring withstands rapid cycling and high-frequency opening\/closing without fatigue failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Barb Options:\u003c\/strong\u003e Available in both standard and extended long barb profiles to ensure deep insertion and leak-proof mechanical hose grip.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Shock Resistance:\u003c\/strong\u003e Functions consistently in harsh freezing winter conditions (-60°C) and hot engine bay environments (+120°C).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRecommended Applications\u003c\/h3\u003e\n\u003cp\u003eEssential for automotive windshield washer lines (stops fluid drain-back), diesel generator priming lines, vacuum pump check circuits, oil burner supply lines, liquid filling machines, and diaphragm pump manifolds.\u003c\/p\u003e\n\u003cp style=\"font-size: 12px; color: #777; margin-top: 20px; border-top: 1px solid #eee; padding-top: 10px;\"\u003ePrecision-tested fluid control and non-return valves delivered worldwide by \u003cstrong\u003eAtradesen.com\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Atradesen","offers":[{"title":"3.2mm (1\/8\" ID) - Standard","offer_id":57723327381670,"sku":"Pipe_Quick_261021S_50","price":0.89,"currency_code":"USD","in_stock":true},{"title":"4.8mm (3\/16\" ID) - Standard","offer_id":57723327414438,"sku":"Pipe_Quick_261021S_51","price":0.89,"currency_code":"USD","in_stock":true},{"title":"6.4mm (1\/4\" ID) - Standard","offer_id":57723327447206,"sku":"Pipe_Quick_261021S_52","price":0.89,"currency_code":"USD","in_stock":true},{"title":"6.4mm (1\/4\" ID) - Extended Long","offer_id":57723327479974,"sku":"Pipe_Quick_261021S_53","price":0.89,"currency_code":"USD","in_stock":true},{"title":"7.9mm (5\/16\" ID) - Extended Long","offer_id":57723327512742,"sku":"Pipe_Quick_261021S_54","price":0.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/2588\/6118\/files\/pa66-fuel-line-check-valve-3-2-7-9mm-for-diesel-vacuum_001.png?v=1792574002","url":"https:\/\/atradesen.com\/products\/pa66-fuel-line-check-valve-3-2-7-9mm-for-diesel-vacuum","provider":"Atradesen","version":"1.0","type":"link"}