Secure locking and debris protection: A robust locking mechanism prevents accidental openings and blocks external debris, ensuring safe, uncontaminated water storage for RV use. Effortless water filling design: Tilted flowguiding mechanism enables smooth, splash filling and easy operation, enhancing usability for travelers. Temperatureadaptive design: Constructed with PP, zinc alloy, and iron to resist wear and temperature fluctuations, delivering reliable performance over longterm use. Two independent keys included: A doublekey backup system provides two separate keys to ensure consistent performance and easy access at all times. Use scenario: While campground or highway travel, connect to a standard RV freshwater source to fill your tank with a secure, splash inlet and reliable lock for clean water. Use scenario: On remote trips or in outdoor settings, the inlet's durable materials resist environmental wear and protect water quality from debris and accidental opening. Use scenario: In rental fleets or family RVs, the twokey system allows a spare key to be kept separate, reducing downtime and ensuring access if a key is misplaced.