{"product_id":"ambuker-rv-fresh-water-inlet-lockable-39mm-gravity-fill-cap-spring-seal-bayonet-75","title":"Ambuker RV Fresh Water Inlet Lockable 39mm Gravity Fill Cap — Spring Seal, Bayonet 75°","description":"\u003cstrong\u003eAmbuker's lockable fresh water inlet cap is a spring-sealed, bayonet-style gravity fill hatch with two keys, made from food-grade PP to securely refill RV and trailer freshwater tanks.\u003c\/strong\u003e\n\n\u003cp\u003eKeep your RV or camper's potable water supply secure and fast to refill with a lockable inlet designed for everyday use. This replacement kit from Ambuker combines a wide 39mm opening for quicker gravity fills, a spring-assisted cover and seal ring to prevent leaks and contamination, and a bayonet-style 75° inlet to stop overflow. The durable food-safe polypropylene construction resists weather and blends with modern RV exteriors.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this inlet speed up refilling on the road?\u003c\/h3\u003e\n\u003cp\u003eThe large-diameter opening and optimized inlet angle let water flow quickly under gravity, reducing time spent at fill stations. The bayonet fit ensures a smooth connection and prevents accidental spills while pouring.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e39mm wide fill port for higher flow rates\u003c\/li\u003e\n  \u003cli\u003e75° inlet angle designed to reduce splashing and overflow\u003c\/li\u003e\n  \u003cli\u003eBayonet-style fitting for secure, fast seating\u003c\/li\u003e\n  \u003cli\u003eVent holes that reduce back-spray while filling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill the cover keep tank water clean and leak-free?\u003c\/h3\u003e\n\u003cp\u003eThe kit uses a compression spring and a resilient sealing ring to hold the cap tightly closed, blocking rain, dirt, and insects. Together these parts help prevent external water ingress and reduce the chance of leaks when the vehicle is in motion.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSpring mechanism maintains consistent closure pressure\u003c\/li\u003e\n  \u003cli\u003eSealing ring protects against rain and contaminant entry\u003c\/li\u003e\n  \u003cli\u003eWaterproof fit minimizes dripping and loosening on bumpy roads\u003c\/li\u003e\n  \u003cli\u003eLockable design prevents tampering or accidental openings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow secure and convenient is the lock feature?\u003c\/h3\u003e\n\u003cp\u003eThe inlet cap includes a keyed lock and two matching keys so you can restrict access to your freshwater supply. The lock is integrated into the cap’s profile for a clean look while still allowing quick unlocking when you need to fill.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComes with two metal keys for shared or backup access\u003c\/li\u003e\n  \u003cli\u003eLocking mechanism keeps the hatch closed when unattended\u003c\/li\u003e\n  \u003cli\u003eStreamlined design keeps keys and lock protected from weather\u003c\/li\u003e\n  \u003cli\u003eEasy to operate: turn key and lift—no complex tools required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about materials and appearance?\u003c\/h3\u003e\n\u003cp\u003eAmbuker crafted the inlet from food-grade polypropylene to meet potable-water safety expectations and resist UV and road wear. The cap’s industrial-arc texture and clear nozzle markings make it simple to match existing RV styling and identify the fill point quickly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFood-grade PP for safe contact with drinking water\u003c\/li\u003e\n  \u003cli\u003eTextured arc pattern for a modern, durable look\u003c\/li\u003e\n  \u003cli\u003eHighly legible nozzle markings for quick identification\u003c\/li\u003e\n  \u003cli\u003eWeather-resistant finish to maintain appearance over time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This replacement inlet is aimed at RV and camper owners, vanlifers, and small-trailer users who want a safer, faster and more secure fresh water fill point. It's a practical upgrade for anyone replacing a worn inlet, adding a lock for security, or improving the speed and reliability of routine refills without altering tank plumbing.\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 inlet fit standard RV tank openings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits most 39mm gravity-fill openings and bayonet-style mounts; verify your inlet diameter before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the materials safe for drinking water?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The cap is injection-molded from food-grade polypropylene suitable for potable water contact.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Ambuker","offers":[{"title":"Default Title","offer_id":55161107415383,"sku":"B0FKMV5HKN","price":34.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/ambuker-front-view-lockable-inlet-cap.jpg?v=1790322392","url":"https:\/\/britishgarage.co.uk\/products\/ambuker-rv-fresh-water-inlet-lockable-39mm-gravity-fill-cap-spring-seal-bayonet-75","provider":"British Garage","version":"1.0","type":"link"}