40 Litre Underslung Tank - Traffic Black (Ral 9017)
Description / 40 Litre Underslung Tank - Traffic Black (Ral 9017)
40 litre universal underslung tank – suitable for installation under a wide range of campervans, motorhomes, trailers and service vehicles. Designed for secure underbody mounting, this flat MDPE tank provides reliable fresh or waste water storage while maximising interior space.
Fit & Compatibility
- Universal fit
- Capacity: 40 L
- Dimensions (L×W×H excl. lid): 75 × 37 × 16 cm
- Height incl. lid: 16 cm
- Wall thickness: 4-5 mm
- Connections: 1× ½" BSP brass inlet and 3× ¾" BSP brass outlets
- Vents: 2× ¼" brass vent valves on tank top
- Lid: 12 cm flat, non-vented (mounted on underside)
- Mounting: install using straps, brackets or custom supports (no kit included)
- Default colour: Traffic Black (RAL 9017)
Features & Benefits
- High-quality MDPE tank, rotomoulded without welding seams
- Robust, reliable and food-grade safe
- UV-stabilised & impact-resistant
- Extra-flat design for tight underbody installations
- Suitable for both fresh and waste water use
Installation & Handling
- ½" brass inlet and ¾" outlets supplied undrilled (open as required)
- 12 cm non-vented lid provides access for cleaning
- Install using mounting straps, perforated metal band or frame depending on vehicle
- Tank wall thickness approx. 4-5 mm for strength and durability
- For adding extra fittings such as fillers, vents or outlets use our PP Tank Connection Sets
Applications
- Campervan and motorhome conversions
- Caravans, buses and trailers
- Service and utility vehicles
- Off-grid water supply and mobile systems
Drawings & Certificates
- Technical drawing available
- Certified to WRAS, REACH & RoHS standards
FAQs & Installation
- Are the connections drilled? – No, they are closed and can be opened as required.
- Is this tank suitable for fresh and waste water? – Yes, MDPE is food-grade and safe.
- Is a mounting kit included? – No, installation depends on your vehicle setup.
Drawings & Certificates
More Information
| General Information | |
|---|---|
| Capacity (L) | 40 |
| Dimensions (LxWxH cm) | 75 x 37 x 16 |
| Height incl. Lid (cm) | 16 |
| Shape & Type | Flat Tank |
| Weight (kg) | 4.5 |
| Material & Durability | |
| Material | MDPE |
| Wall Thickness (mm) | 4 |
| Food-Safe Certification | WRAS approved - natural / black / light blue |
| UV Resistance | Yes |
| Temperature Resistance (°C) | max. + 70°C |
| Chemical Resistance | Yes with undrilled BSP Outlet |
| Suitable for Waste Water & Diesel | Yes |
| Design Features | |
| Baffles | No |
| Lid Size (cm) | 12 cm |
| Inspection Opening (cm) | 10,6 cm |
| Lid vented | No |
| Lid with Float | No |
| 3D file available | Yes, on request |
| Connections & Installation | |
| BSP Connections | Yes |
| BSP Connection Size | 1x 1/2" / 3x 3/4" |
| Spin Weld Outlet possible | Yes |
| Installation Type | flat, horizontal |
| Mounting Options | plastic-coated steel strips / stainless steel brackets / frames |
| Accessory Compatibility | Brass & Plastic, Filters, Float-Valves |
Installation Push-In BSP Fittings
Our Push-In BSP Fittings can be installed quickly, easily, and completely from the outside; even in areas that are not accessible from the inside. This allows connections to be made flexibly at any flat section of the water tank; without opening or dismantling the tank.
Simple. Fast. Flexible. Our PP tank connectors feature an external thread from ½" to 2" and an internal thread from 3/8" to 1 ½" inside the fitting.
Tip: For liquids other than water, versions with NBR seals (diesel-resistant) and FKM seals (chemical-resistant) are available
Video: Installing Push-In BSP Fitting on watertank