Valterra RV Gravity & City Water Fill Inlet White with Check Valve — UV-Stable, Screened Vent

The Valterra White Gravity City Water Fill Dish is a combined gravity-fill and garden-hose-ready city water inlet with an integrated check valve to prevent backflow.

This molded white water fill dish fits common RV, trailer, and marine installations, offering two convenient ways to add water: a gravity-fill opening for tank top-ups and a threaded city connection for standard garden-hose hookups. Built from UV-stabilized plastic, it resists sun damage and is sized to fit a 5 3/4" by 3-3/4" rough opening, with the full face measuring 7 9/16" wide by 5 5/16" tall. A screened vent port and a built-in check valve increase usability and help protect against backflow into the supply.

How does this valve let me fill my RV water tank?

The unit includes a gravity-fill port that accepts 1 1/4" ID or 1-3/8" hose for quick, no-thread top-offs of your onboard tank. The opening is sized so you can slip a gravity hose in and let water flow in without a threaded adapter, making campground fill-ups fast and simple.

• Accepts 1 1/4" ID or 1-3/8" hose for gravity filling
• No threaded connection needed for gravity mode
• Fits a standard rough opening of 5 3/4" by 3-3/4"

Can I connect a garden hose or city water to this inlet?

Yes — a separate threaded city water connection accepts a 1/2" threaded pipe fitting so you can attach a standard garden hose or campground water supply. The city inlet gives you pressurized water to your rig’s plumbing when connected, while the check valve protects against unwanted backflow.

• 1/2" threaded pipe fitting for city water hookups
• Integrated check valve prevents backflow into supply
• Suitable for RV, trailer, and marine city connections

What durability and ventilation features does it include?

The face and internal parts are molded from UV-stabilized plastic to resist fading and cracking from sunlight exposure. A screened vent port allows air to escape while filtering debris and insects, keeping the fill system cleaner over time.

• UV-stabilized plastic construction for long outdoor life
• Screened air vent compatible with 1/2" ID hose
• Built-in check valve for supply protection

What are the exact dimensions and installation notes I should know?

The finished product 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". It’s designed to mount flush to the vehicle exterior and connect to common hose sizes, but verify hose ID and fitting threads before installation to ensure compatibility.

• Overall face: 7 9/16" W x 5 5/16" H
• Rough opening: 5 3/4" x 3 3/4"
• Gravity hose: 1 1/4" ID or 1-3/8" hose; city: 1/2" threaded pipe fitting

Who this is for: This Valterra gravity/city water fill dish is aimed at RV owners, trailer builders, and marine enthusiasts who need a dual-function inlet that’s easy to use and resistant to sun exposure. It’s a practical upgrade for anyone seeking a tidy exterior fill solution with backflow protection and a screened vent — ideal for DIY installers, repair shops, and new unit manufacturers wanting a reliable, space-efficient water fill accessory.