Valterra Gravity & City Water Fill Dish — White recessed RV/Marine inlet with check valve, vented 7-9/16" faceplate

Valterra’s white gravity and city water fill dish is a compact RV and marine inlet that lets you top off fresh water tanks via gravity or connect a pressurized city hose while its built-in check valve prevents backflow.

This recessed fill dish combines a gravity-fill opening and a city water connection in one UV-stabilized plastic assembly sized for common RV and trailer cutouts. Designed to accept a hose for gravity filling and a standard threaded fitting for city water, it includes an air vent connection with screen and a one-way check valve to keep potable water from flowing back into the supply. The unit’s dimensions and simple installation make it a practical retrofit or replacement part for campers, motorhomes, trailers, and small boats.

How will this fill dish fit my RV or boat?

The faceplate measures 7 9/16" wide by 5 5/16" tall while the recommended cutout or rough opening is 5 3/4" by 3 3/4". Its shallow profile sits flush in standard recessed locations and works as a direct swap for similar gravity/city inlets. Check your cabinet or exterior hatch opening against the listed cutout before purchasing.

• Overall faceplate: 7 9/16" x 5 5/16"
• Recommended cutout/rough opening: 5 3/4" x 3 3/4"
• Suits typical recessed inlet mounts on RVs and trailers

What connections does it accept and how do I use them?

The gravity fill accepts a 1 1/4" ID or 1 3/8" hose for tank topping without threads, while the city port accepts standard 1/2" threaded pipe fittings for pressurized water. Use a short hose into the gravity opening for filling or attach a garden hose to the city fitting when campground water is available. The unit also includes a vent port with a screen to prevent debris entry during fill operations.

• Gravity opening: fits 1 1/4" ID or 1 3/8" hose
• City connection: 1/2" threaded pipe fitting
• Air vent: accepts 1/2" ID hose with debris screen

How does the check valve protect my water system?

The integrated check valve prevents backflow from the RV tank into the external water supply or campground source, reducing contamination risk and ensuring one-way flow during fills. It operates automatically without extra parts or user intervention. The valve is positioned in the city connection path to maintain potable water safety under normal use.

• Built-in one-way check valve prevents backflow
• Automatic operation—no manual valves required
• Helps preserve potable water integrity while connected to city water

What material and durability features does the inlet offer?

Constructed from UV-stabilized plastic, the fill dish resists fading and cracking from sunlight exposure common in outdoor and marine environments. The white finish blends with many RV exteriors and is easy to clean. It’s engineered for routine use with common hoses and fittings, giving years of dependable service when installed correctly.

• UV-stabilized plastic for outdoor durability
• White, easy-clean faceplate and functional design
• Designed for regular recreational use and hose connections

Who is this for: This Valterra gravity/city fill dish is ideal for RV owners, trailer refurbishers, boaters, and fleet operators who need a compact, dual-function inlet with an integrated check valve. Choose it when replacing a worn inlet, upgrading a gravity-only fill to include city water capability, or when you want a reliable, easy-to-install inlet that prevents backflow while supporting both gravity fills and pressurized hookups.