{"product_id":"jyincped-transfer-tank-vented-fuel-cap-for-2-npt-cast-iron-2-base-lockable-spring-loaded-seal","title":"JYINCPED Transfer Tank Vented Fuel Cap for 2\" NPT — Cast Iron 2\" Base, Lockable \u0026 Spring‑Loaded Seal","description":"\u003cp\u003e\u003cstrong\u003eJYINCPED Transfer Tank Vented Fuel Cap is a lockable, spring-loaded diesel tank cap assembly designed for 2\" NPT threaded bungs that vents pressure and prevents leaks and theft.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis heavy-duty transfer tank cap replaces standard 2\" threaded filler bungs and is compatible with common transfer, auxiliary, mobile and on‑vehicle fuel tanks. Built from corrosion‑resistant materials, it combines a removable vented cap and a cast iron 2‑inch base so you can safely release pressure, keep contaminants out, and secure your diesel or distillate fuel against siphoning and tampering.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this cap manage pressure inside a fuel transfer tank?\u003c\/h3\u003e\n\u003cp\u003eThe cap features a two‑direction venting design and a spring‑loaded seal. When opening, the cap releases trapped vapor and pressure gradually; when closed, it allows controlled air ingress to prevent vacuum formation during fuel withdrawal.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTwo‑direction venting releases internal pressure before full removal\u003c\/li\u003e\n  \u003cli\u003eSpring‑loaded mechanism maintains a tight seal while driving\u003c\/li\u003e\n  \u003cli\u003eInternal gasket reduces excess vapor escape and leakage\u003c\/li\u003e\n  \u003cli\u003ePrevents tank collapse by allowing air back in as fuel is drawn out\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan this cap help stop fuel theft or tampering?\u003c\/h3\u003e\n\u003cp\u003eYes — the design includes a lockable tab to accept padlocks (1\/4\"–5\/16\" shackle) so you can physically secure the filler neck. The lockable feature reduces chances of siphoning and unauthorized access to expensive diesel or gasoline supplies.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLock hole integrated into one base tab for a compact padlock fit\u003c\/li\u003e\n  \u003cli\u003eCompatible with common 1\/4\"–5\/16\" shackle padlocks (not included)\u003c\/li\u003e\n  \u003cli\u003eSolid cast iron base and tab resist prying attempts\u003c\/li\u003e\n  \u003cli\u003eWorks on mobile, farm, and commercial transfer tanks for added security\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat ensures this cap won't leak while driving or in storage?\u003c\/h3\u003e\n\u003cp\u003eThe combination of a durable internal gasket and the spring‑loaded closure creates a reliable seal that resists vibration and road movement. Proper installation — align the notch, push down and twist clockwise — locks the cap into its seated position and minimizes leaks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInside gasket forms a fuel‑tight seal when fully tightened\u003c\/li\u003e\n  \u003cli\u003eSpring loading keeps constant downward pressure on the seal\u003c\/li\u003e\n  \u003cli\u003eCast iron 2\" base gives a rigid mounting surface for reliable fitment\u003c\/li\u003e\n  \u003cli\u003eSimple twist‑and‑push installation prevents accidental loosening\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to install and operate during refills?\u003c\/h3\u003e\n\u003cp\u003eInstalling the cap is straightforward: it threads into a standard 2\" NPT bung and uses a clear twist‑and‑notch operation for safe venting. To remove, turn counterclockwise to the notch to vent pressure, then push and twist upward to fully lift the cap.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits standard 2\" NPT threaded tank bungs\u003c\/li\u003e\n  \u003cli\u003eAlign notch, push down, and twist clockwise to tighten\u003c\/li\u003e\n  \u003cli\u003eCounterclockwise to notch vents pressure before full removal\u003c\/li\u003e\n  \u003cli\u003eRemovable vented cap simplifies transfer and maintenance tasks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This JYINCPED vented diesel tank cap suits fleet owners, farmers, contractors, and anyone using transfer or auxiliary fuel tanks on vehicles and equipment. It’s made for users who need a durable, leak‑resistant replacement cap that improves safety by relieving pressure, prevents vacuum collapse, and adds a simple locking option to protect fuel assets.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this cap fit my 2\" threaded transfer tank?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It is designed for standard 2\" NPT threaded bungs and replaces common transfer tank filler caps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use a padlock with this vented cap?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The cap accepts a 1\/4\"–5\/16\" shackle padlock (not included) on the base tab for added security.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"JYINCPED","offers":[{"title":"Default Title","offer_id":55167059099991,"sku":"B0CKT18BWC","price":39.51,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/jyincped-front-facing-cap-and-base.jpg?v=1790376015","url":"https:\/\/britishgarage.co.uk\/products\/jyincped-transfer-tank-vented-fuel-cap-for-2-npt-cast-iron-2-base-lockable-spring-loaded-seal","provider":"British Garage","version":"1.0","type":"link"}