Valterra RV Water Hatches: Gravity Fill vs City Water

Before replacing an RV fresh-water hatch, identify whether your vehicle uses a gravity tank fill, a pressurized city-water inlet, or both in one panel. Valterra makes compact combination inlets and larger lockable hatches that require different wall openings. A gravity-only hatch does not replace a city-water connection.

Large lockable combination hatches

Valterra 2000-series brass and 2004-series plastic city-inlet versions use a 5-7/8 × 4-3/4-inch cutout and 7-5/8 × 6-1/2-inch outside housing. They provide separate gravity and city-water connections.

Compact combination or gravity-only

The 2001 series uses a 5-1/2 × 3-1/2-inch wall opening. The A01-2002VP is a gravity-only hatch designed for two alternative cutout patterns and has no city-water inlet.

Gravity and city-water hatch cutout chart

Valterra MPN Style Finish RV-side plumbing Wall cutout
A01-2000VP Lockable gravity/city hatch White Brass city inlet; 1/2 in MPT, 1-1/4 in barb 5-7/8 x 4-3/4 in
A01-2004VP Lockable gravity/city hatch White Plastic city inlet; 1/2 in MPT, 1-1/4 in barb 5-7/8 x 4-3/4 in
A01-2004BKVP Lockable gravity/city hatch Black Plastic city inlet; 1/2 in MPT, 1-1/4 in barb 5-7/8 x 4-3/4 in
A01-2001VP Compact gravity/city panel White 1/2 in MPT, 1-1/4 in barb 5-1/2 x 3-1/2 in
A01-2001BKVP Compact gravity/city panel Black 1/2 in MPT, 1-1/4 in barb 5-1/2 x 3-1/2 in
A01-2002VP Gravity-only hatch White 1-1/4 in fill barb and 1/2 in vent; no city inlet 4-1/4 x 4-3/4 or 4 x 3 in
Match the opening: A01-2002VP is a gravity-only filler; A01-2001VP is a compact gravity/city panel; the 2000 and 2004 series are larger lockable gravity/city hatches. Exterior size is not the same as wall cutout size.

What to measure before replacing a hatch

  1. Determine whether the original inlet has a pressurized city-water hose connection, a gravity filler for the fresh-water tank, or both.
  2. Measure the prepared wall cutout, not just the outer cover. The compact and lockable combination designs have different cutout dimensions.
  3. Check for a 1-1/4-inch gravity-fill hose barb, 1/2-inch air-vent line and 1/2-inch threaded city-water plumbing connection, as applicable to your model.
  4. Inspect the existing panel's sealing flange, screw locations, water lines and wall backing. Do not enlarge the opening without checking the RV's framing and plumbing clearance.
  5. Confirm the specific product's supplied keys, hardware and sealing materials. Keep the gravity vent open and follow the RV manufacturer's installation and leak-check procedure.

Matching Valterra products

Choose the exact manufacturer number to check its product details and current online availability.

See the Valterra flush and recessed city-water inlet comparison for separate wall fittings with MPT and FPT rear connections.

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