Keyed Lock RV Gravity Water Fill Inlet Hatch for Campers & Caravans

Unsecured fresh water tanks, contaminated drinking supplies, and cracked exterior fill ports shouldn't ruin your camping trips or boondocking adventures. Protect your onboard drinking water supply and ensure safe, easy filling with our keyed lock RV gravity water fill inlet hatch, custom-engineered for RVs, camper trailers, motorhomes, and boats.

Crafted from high-impact, UV-stabilized ABS plastic, this heavy-duty exterior hatch resists harsh sun yellowing, road debris impacts, and extreme weather exposure. Featuring a secure key-locking cap mechanism, it keeps unauthorized access, dust, insects, and chemical contaminants away from your clean drinking water tank. Designed with a standard gravity fill neck and a integrated air vent port, it allows air to escape as water enters, preventing backpressure splashes and allowing fast, smooth tank filling from any standard garden hose.

Key Features

• Key-Locking Protective Cap: Integrated brass lock cylinder and keys protect your fresh water supply against tampering, vandalism, and contamination.

• UV-Stabilized High-Impact ABS: Weatherproof composite body stands up to intense sun exposure, rain, road salt, and physical impact without cracking or fading.

• Fast Gravity Fill with Air Vent: Built-in air pressure vent line prevents vacuum vapor lock, enabling rapid, splash-free water tank filling.

• Leak-Proof Dust & Seal Cover: Sealed internal rubber gasket and tethered bayonet cap keep road dust, dirt, and rainwater out when closed.

• Easy Direct Exterior Replacement: Standardized round mounting footprint easily replaces damaged, faded, or broken factory water inlets.

• Includes Keys & Mounting Hardware: Comes ready for immediate installation with two matching keys and pre-drilled flange mounting holes.

• Universal Outdoor Compatibility: Perfect fit for travel trailers, fifth wheels, camper vans, motorhomes, marine boats, and utility rigs.

Why Choose Our Lockable RV Water Inlet Unlike non-locking original equipment caps that leave your water tank exposed or cheap plastic ports that yellow and snap under sun exposure, our UV-stabilized lockable water hatch offers dual-key security, rapid splash-free venting, and long-lasting all-weather durability.

Perfect For

• RV owners and campervan builders replacing old, cracked, or discolored exterior water fill ports.

• Boondockers and road trippers wanting to protect their potable water supply from contamination.

• Boat owners and trailer builders needing a secure, vented fresh water deck inlet.

Product Specs

• Quantity: 1 Vented Gravity Water Inlet Hatch + 2 Keys + 1 Bayonet Cap

• Material: UV-Stabilized Heavy-Duty ABS Plastic & Metal Lock Cylinder

• Mounting Style: Round Flange Cutout with Vented Inlet Neck

• Inlet Hose Diameter: Fits Standard 1.5 in (38 mm) Water Hose & 1/2 in Vent Pipe

• Compatibility: Universal Fit for RVs, Campers, Travel Trailers, Motorhomes, & Boats

• Application: Fresh Water Tank Filling, Exterior Hatch Security, & RV Potable Water Protection

Secure Your Fresh Water Supply Today Keep your drinking water safe, clean, and easy to fill wherever your adventures take you. Order your keyed lock RV gravity water fill inlet hatch today!