This lockable water filler is a practical, secure and convenient solution for caravans, campers and RVs. Designed to handle both mains pressure water and tank filling, this unit includes a clip-on mains connection, a tank filler, and space to add a second tank filler if your setup requires it (optional second filler sold separately SKU 800-01092).

Built with a durable door that can be locked even while the hose is connected, this unit keeps your water system secure at all times. It includes a rubber gasket for easy installation, spare door options, and everything sized to industry-standard cut-out dimensions for a straightforward fit.

Please Note: Two plastic keys are included, but they ship locked inside the unit

Features

Dual-function design: Includes mains pressure clip-on fitting and 1 tank filler, with room for a second filler.

Secure lockable door: Can be locked while the hose is connected, preventing accidental disconnection or tampering.

Easy installation: Supplied with a rubber gasket and fits standard caravan cut-out sizes.

Optional spare doors available: Replacement door Part 800-01091.

Strong construction: UV-stable plastic with smooth operation and tight sealing.

1-year warranty: Peace of mind for long-term use.

Perfect fit: Designed to replace XC9BOX01 and C6477D water fillers.

Specifcations

• Brand: Coast to Coast RV

• Model / SKU: 800-01090

• Other Identifiers: C6477D, XC9BOX01

• Original Model: XC9BOX01 / C6477D

• Cut-Out Size Required: 185mm x 110mm (8mm radius corners)

• Overall Dimensions: 227mm x 150mm (25mm radius corners)

• Recess Depth Required: 83mm

• Overall Protrusion (front to rear): 100mm

• Protrusion From Wall: 12mm

• Door Opening (small flap): 65mm x 55mm

• Screw Hole Spacing: 95mm apart

• Screw Type: #6

• Mains Pressure Connection: 1/2” BSP

• Tank Filler Connection: 25mm barb

• Breather Size: 12mm

• Second Tank Filler Space: Yes (optional  SKU 800-01092)

•  

• includes a clip-on mains pressure fitting with a 1/2” BSP connection.

Frequently Asked Questions 

Q: Does it include a tank filler?
Yes , one 25mm tank filler is included. There is also space for a second filler if required (sold separately).

Q: Can I lock the door while connected to water?
Yes , the door can be locked with the hose attached, securing your connection during use.

Q: Are keys included?
Yes ,  but the two plastic keys are inside the door on delivery. Once the filler is installed, you can open the door from behind to retrieve them.

Q: Will this replace my XC9BOX01 or C6477D filler?
Yes ,  this is the updated and compatible replacement.

Q: What size opening do I need?
A 185mm x 110mm cut-out with 8mm radius corners is required.

Q: What size hose connections does this support?

• Mains pressure: 1/2” BSP

• Tank filler: 25mm barb

• Breather: 12mm

Q: Does it come with a seal?
Yes , a rubber gasket is included for quick, clean installation.

Q: Are spare doors available?
Yes , replacement door 800-01091 fits this unit.