Plumbing & Water · My build kit

RecPro Black Gravity-Fill Hatch

I bought this gravity-fill hatch among my van plumbing parts. Locating openings before fitting interior panels is a clear priority in my Interior Preparation planning notes.

By · Camper Van Freedom

Read my build notes ↓

The Item in My Kit

I bought RecPro Black Gravity-Fill Hatch as part of my camper van equipment.

I bought this gravity-fill hatch among my van plumbing parts. Locating openings before fitting interior panels is a clear priority in my Interior Preparation planning notes.

A Gravity-Fill Opening in the Exterior Layout

  1. I used SketchUp to plan the interior and put body openings ahead of the framing, floor and wall panels.
  2. My Interior Preparation notes included the shower drain and openings for three water tanks in that preparation sequence.
  3. I removed cargo tie-down hardware for later framing mounts and door trim for the later insulation and paneling.
Removing stuck-on residue during the floor cleanup.
Removing stuck-on residue during the floor cleanup.
The cargo floor during my preparation session before sound deadening.
The cargo floor during my preparation session before sound deadening.

My Takeaway for the Build

I wanted the body openings completed before the interior layers went in. The RecPro gravity-fill hatch purchase is a clear example of why that sequence matters to the layout. Valterra provides another individual inlet, while the combined JR Products enclosure groups gravity fill and city water into a different exterior opening.

Product Details And Van-Build Uses

SpecificationProduct Detail
StyleRound gravity-fill hatch
Overall Diameter4¾ inches
Recessed Mounting Hole3½ inches
Fill Hose1¼-inch or 1½-inch

RecPro’s round gravity-fill hatch provides a capped opening for a non-pressurized tank-fill route. The manufacturer lists the outside flange diameter separately from the recessed mounting hole, along with the fill-hose and vent-hose connections. Those measurements help connect the visible exterior part with the plumbing space behind the panel. For a van water-system layout, the fill hose needs a route to the tank, while the vent connection has its own path. This is a different arrangement from the threaded city-water inlet already linked elsewhere in the materials collection.

Manufacturer Product Reference

RecPro City-Water Inlet: Check Valve And Connection Layout

Spears 1½-Inch Barb-To-Spigot Adapter: Connection Details

Is The Flange Diameter The Required Hole Size?

No. RecPro lists a 4¾-inch overall diameter and a separate 3½-inch recessed mounting hole.

Alternative products

Two Alternatives to Compare

Valterra offers another individual black gravity-fill inlet. The JR Products hatch combines gravity fill and city water in a single enclosure, which calls for a different exterior opening and layout.

ProductWhat distinguishes itPurchase link
RecPro Black Gravity-Fill HatchIndividual capped black gravity-fill hatch.View on Amazon
Valterra Black Gravity-Fill Inlet (alternative)Another individual black gravity-fill inlet.View on Amazon
JR Products City-and-Gravity Water Hatch (alternative)Combined city-water and gravity-fill enclosure with door.View on Amazon
Valterra Black Gravity-Fill Inlet

Valterra Black Gravity-Fill Inlet

This black inlet provides a capped gravity-fill opening. Its mounting flange surrounds the opening at the exterior panel.

View on Amazon
JR Products City-and-Gravity Water Hatch

Jr Products City-and-Gravity Water Hatch

This exterior hatch groups a city-water connection and gravity-fill opening in one enclosure. Its door covers both connections when closed.

View on Amazon

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