{"product_id":"wintowin-2-npt-flip-top-vented-locking-fill-cap-2-inch-cast-iron-powder-coated-secure-closure","title":"WINTOWIN 2\" NPT Flip-Top Vented Locking Fill Cap — 2-Inch Cast Iron, Powder-Coated Secure Closure","description":"\u003cp\u003e\u003cstrong\u003eWINTOWIN’s 2-inch flip-top vented locking fill cap is a cast-iron replacement cap that seals 2\" NPT fuel ports while allowing controlled venting and the option to lock the cap for secure diesel transfer storage.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for diesel transfer tanks, fuel transfer containers and outdoor storage tanks, this flip-top fill cap swaps in for worn bung plugs and provides a sturdier, more secure closure. Finished with a powder coat to resist rust, it combines a hand-tight thread fit, integrated venting and a lock port so you can keep contents secure and contamination out without special tools.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this cap prevent leaks and contamination?\u003c\/h3\u003e\n\u003cp\u003eThe cap uses a robust threaded 2\" NPT fit plus an internal dustproof seal to block dirt and water. When closed, the seal compresses to reduce seepage; the flip-top retention minimizes accidental opening during handling.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrecision cast iron body with powder coat finish for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eTight rubber or elastomer seal to block dust and moisture\u003c\/li\u003e\n  \u003cli\u003eThreaded 2\" NPT design for a secure, leak-resistant engagement\u003c\/li\u003e\n  \u003cli\u003eFlip-top closure reduces accidental spillage during transport\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my diesel transfer tank or fuel transfer container?\u003c\/h3\u003e\n\u003cp\u003eThis cap is engineered for standard 2\" NPT threaded ports commonly found on transfer tanks and outdoor storage drums. It replaces most worn or missing bung-style caps without adapters when your container uses a 2\" NPT thread.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect replacement for standard 2\" NPT threaded openings\u003c\/li\u003e\n  \u003cli\u003eSuits diesel transfer tanks, portable fuel tanks and outdoor oil drums\u003c\/li\u003e\n  \u003cli\u003eNo adapters required for true 2\" NPT ports—check thread match before purchase\u003c\/li\u003e\n  \u003cli\u003eHand-tight installation supports quick swaps in the field\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and locking?\u003c\/h3\u003e\n\u003cp\u003eInstallation takes three simple, tool-free steps: thread the cap into the port, hand-tighten until seated, and close the flip top. The integrated lock port accepts a small padlock to prevent unauthorized opening, useful for shared worksites or outdoor storage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThread in by hand—no tools required\u003c\/li\u003e\n  \u003cli\u003eQuick flip-top operation for fast access to the fill port\u003c\/li\u003e\n  \u003cli\u003eLock port designed for standard small padlocks for added security\u003c\/li\u003e\n  \u003cli\u003eBuilt-in venting maintains pressure balance while closed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and durability features should I expect?\u003c\/h3\u003e\n\u003cp\u003eThe cap is made from precision-cast iron and protected with a durable powder coat to resist chipping and corrosion in outdoor environments. The internal vent system and sealing surfaces are engineered for repeated use without rapid wear.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCast iron construction for strength and longevity\u003c\/li\u003e\n  \u003cli\u003eProtective powder-coat finish to reduce rust on exposed surfaces\u003c\/li\u003e\n  \u003cli\u003eVented design helps equalize tank pressure during filling and storage\u003c\/li\u003e\n  \u003cli\u003eSeals and moving parts sized for frequent opening and closing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? WINTOWIN’s 2\" flip-top vented locking fill cap is aimed at contractors, fleet managers, farmers, and DIYers who need a rugged, lockable replacement cap for diesel transfer tanks and portable fuel containers. If you use standard 2\" NPT fuel ports and want a low-maintenance, secure cap that resists corrosion and contamination while allowing controlled venting, this cap is built to fit those needs.\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: Does this cap fit all 2\" NPT fuel ports?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it fits standard 2\" NPT threaded ports. Verify your tank uses true 2\" NPT threads before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I lock the flip top to prevent tampering?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the cap includes an integrated lock port compatible with small padlocks for added security.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"WINTOWIN","offers":[{"title":"Default Title","offer_id":55166200217943,"sku":"B0FCG78WX1","price":35.09,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/wintowin-front-packaging-fill-cap.jpg?v=1790364947","url":"https:\/\/britishgarage.co.uk\/products\/wintowin-2-npt-flip-top-vented-locking-fill-cap-2-inch-cast-iron-powder-coated-secure-closure","provider":"British Garage","version":"1.0","type":"link"}