B&B Molders' recessed city-water dishes have a larger outer flange than the compact 3-inch city-water plates. Models 94218 through 94221 all fit a 3½-inch circular wall opening beneath a 4½-inch outside face. Choose the original check-valve construction and finish as well as the opening size.

Which recessed city-water dish do you need?

B&B part Colour Valve construction Factory OEM number
94218 Polar white Lead-free brass 301-005-00031
94219 Black Lead-free brass 301-005-00035
94220 Polar white Plastic 301-005-00033
94221 Black Plastic 301-005-00036
How the measurements relate
4½-inch outside face

The exposed round dish that covers the perimeter of the old cutout.

3½-inch wall cutout

The actual round opening through the RV sidewall.

½-inch male pipe thread

Rear connection to the compatible pressurized freshwater plumbing.

Valve depth

Brass version: 2½ inches; plastic version: 3 inches according to the factory catalog.

This is a component identification guide, not a scaled installation drawing.

Identify the correct service part

Existing assembly Factory-listed replacement Component being replaced
94218 — white, brass valve 94206 Polar-white inlet dust plug
94219 — black, brass valve 94207 Black inlet dust plug
94220 — white, plastic valve 94210 Polar-white plastic check-valve assembly
94221 — black, plastic valve 94211 Black plastic check-valve assembly

The maker specifies separate replacement parts for the brass-valve caps and the plastic check valves. A dust plug is not a check valve; replacing the cap does not repair a defective backflow-protection component.

Photos of the exact inlets and service parts

Before replacing the fitting

  1. Measure the wall cutout and outside flange separately. A 3-inch face model from another B&B family is not the same size.
  2. Confirm brass versus plastic valve construction on the original fitting.
  3. Check the rear threaded connection, remaining cavity depth and existing plumbing arrangement.
  4. Follow the RV manufacturer's instructions for exterior sealing and fresh-water plumbing, then check the connection for leaks.

Manufacturer drawing and dimensional references

Manufacturer references: B&B Molders' city-water dish specifications and the original B&B illustrated parts catalog (PDF).

For the smaller face design, see the B&B 94214–94217 city-water plate guide.

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