AUD 
US Dollar
Designed for both filler necks with 3 locking pins and Screw on type Please Check photo to make sure it's the same as what you have.
Please select ALko / Hume for the screw on type and 3 tab for the other one.
Built tough for Australian conditions, this adapter comes pre-fitted with a genuine Holman brass hose connector and double O-rings for a secure, leak-free seal. An integrated breather hole allows air to escape while filling, preventing tank pressurisation or overflow. Made from UV-stable 3D-printed material, it’s built to last in the sun.
Perfect for caravans, RVs, and motorhomes — giving you a clean, easy, and reliable way to fill your water tanks on the road.
Features
-
✅ Exact Fit – Designed for 78mm filler necks with 3 locking pins
-
✅ Holman Brass Hose Fitting – strong, rust-resistant, and long-lasting
-
✅ Double O-Rings – secure, watertight seal to prevent leaks
-
✅ Integrated Breather Hole – eliminates pressure build-up while filling
-
✅ UV Stable Material – durable in outdoor conditions, perfect for caravans
-
✅ Australian Made – designed and produced locally
Specifications
-
Fitment: 3-pin filler neck, 78mm outer diameter
- Screw on alko / hume type.
-
Material: UV-stable 3D-printed body + Holman brass fitting
-
Seal: Double O-rings (included)
-
Breather: Yes, integrated hole to prevent tank pressurisation
- Also be used as a hose joiner
What’s Included
-
1x Caravan Water Tank Filler Adapter (UV-stable, with breather hole)
-
1x Holman brass fitting (pre-installed)
Important Notes
-
Please confirm your filler cap size before ordering (must be 78mm, 3 locking pins).
-
3D-printed items may have minor surface variations.
-
Colours may vary slightly from images.
