{"product_id":"aluminium-non-return-check-valve-chrome-nbr-rubber-inline-6-8-10-12mm","title":"Aluminium Non-Return Check Valve Chrome NBR 6\/8\/10\/12mm","description":"\u003ch2\u003eAluminium Chrome Inline Non-Return Check Valve — NBR Rubber Seal\u003c\/h2\u003e\n\u003cp\u003eKeep your fuel, water, oil, or air lines flowing in one direction only with this professional-grade \u003cstrong\u003ealuminium non-return check valve\u003c\/strong\u003e. Built from durable aluminium alloy with an NBR rubber seal and a polished chrome finish, this normally-closed inline check valve delivers consistent, reliable performance across a wide range of low-pressure fluid and gas applications — from marine engines and automotive carburettors to RVs, caravans, agriculture equipment, and water pump systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClear Flow-Direction Arrow:\u003c\/strong\u003e An arrow marked on the valve body indicates the correct fluid flow direction, preventing backflow and keeping fuel or fluid locked in the line — eliminating hard or slow starts caused by fuel drain-back.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Aluminium Construction:\u003c\/strong\u003e The aluminium alloy body significantly outlasts plastic alternatives, providing long-term durability and structural integrity in demanding environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNBR Rubber Seal:\u003c\/strong\u003e The nitrile butadiene rubber (NBR) sealing element offers excellent resistance to petroleum-based fluids, oils, and gases, ensuring a tight, leak-free seal over extended use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Fluid Compatibility:\u003c\/strong\u003e Suitable for use with petrol, diesel, vegetable oil, paraffin, water, gas, and air — ideal for carburettors and low-pressure fuel systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional-Grade Versatility:\u003c\/strong\u003e Designed for marine, automotive, caravan, RV, and agricultural applications, as well as water pressure pumps and galley pumps that are not self-priming.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Simple inline installation and replacement — no tools required beyond basic fitting; no electrical connection needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminium Alloy + NBR Rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eChrome\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 mm \/ 8 mm \/ 10 mm \/ 12 mm (approx. 0.24 \/ 0.31 \/ 0.39 \/ 0.47 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNormally Closed (Hydraulic, electricity-free)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePressure Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLow Pressure\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOil, Fuel, Water, Gas, Air\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStructure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGate \/ Inline\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × Non-Return Check Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eRelated Products You May Find Useful\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-400cm-sealing-tape-faucet-sealing-tape-oil-free-leak-proof-water-pipe-gas-pipeline-sealing-tape\"\u003e1PC 400cm Sealing Tape — Oil-Free Leak Proof Water Pipe \u0026amp; Gas Pipeline Sealing Tape\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-multi-use-faucet-bubbler-wrenches-6-sizes-sink-wrenches-detach-tool-for-kitchen-bathroom-faucet-parts-repair-spanner\"\u003e1PC Multi-Use Faucet Bubbler Wrenches — 6 Sizes Sink Wrench Detach Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-10g-high-grade-silicon-grease-lubricant-o-lubrication-good-odorless-smoothness-for-o-rings-tube-silicone-grease-lubricant\"\u003e1PC 10g High Grade Silicone Grease Lubricant for O-Rings \u0026amp; Tubes\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What sizes does this aluminium non-return check valve come in?\u003c\/h4\u003e\n\u003cp\u003eA: This inline check valve is available in four sizes: 6 mm, 8 mm, 10 mm, and 12 mm (approximately 0.24\", 0.31\", 0.39\", and 0.47\" respectively). Select the size that matches your existing hose or fuel line inner diameter for a secure, leak-free fit.\u003c\/p\u003e\n\u003ch4\u003eQ: What fluids and media is this check valve compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The valve is compatible with petrol, diesel, vegetable oil, paraffin, water, gas, and air. The NBR rubber seal provides strong resistance to petroleum-based fluids, making it well-suited for automotive carburettors, low-pressure fuel systems, marine applications, and agricultural equipment.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this check valve require any electrical connection or special tools to install?\u003c\/h4\u003e\n\u003cp\u003eA: No — this is a fully mechanical, electricity-free device. It operates hydraulically via internal pressure and simply installs inline within your existing hose or pipe. No wiring, no actuator, and no special tools are required beyond basic fitting.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I know which direction to install the valve?\u003c\/h4\u003e\n\u003cp\u003eA: An arrow is clearly marked on the valve body indicating the correct direction of fluid flow. Simply align the arrow with the intended flow direction when connecting it to your line, and the valve will automatically prevent any backflow.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What sizes does this aluminium non-return check valve come in?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This inline check valve is available in four sizes: 6 mm, 8 mm, 10 mm, and 12 mm (approximately 0.24\\\", 0.31\\\", 0.39\\\", and 0.47\\\" respectively). 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