Harlequin 3500 Litre Bunded Oil Tank
The 3500 Litre Environmentally Friendly Bunded Oil Tank is designed for the safe and compliant storage of heating oil in both domestic and commercial installations. Manufactured from high-quality Medium Density Polyethylene (MDPE), this durable bunded oil tank is lightweight, non-corrosive, UV stabilised and built to provide long-lasting performance in a wide range of environments.
Supplied with a range of essential fittings, including an ultrasonic contents gauge and bottom outlet fitting kit, this 3500 litre heating oil tank provides a complete storage solution for professional and residential applications. Its bottom outlet design allows for efficient fuel supply and straightforward installation.
The integrally bunded design features a “tank within a tank”, offering an additional layer of environmental protection in the event of an internal tank failure or leak. This helps prevent oil contamination and ensures compliance with current oil storage regulations, making it ideal for properties requiring secure and environmentally responsible fuel storage.
Suitable for domestic heating oil, commercial fuel storage and agricultural applications, this 3500 litre bunded oil tank combines reliability, safety and modern styling in one practical solution.
Key Features
- Integrally bunded (double-skinned construction)
- Dimensions: L 2450 x W 1770 x H 1890 mm
- 3500 litre capacity
- Harlequin Smart Gauge with app-connected fuel monitoring – included
- 2″ BSP fill point (standard for fuel deliveries)
- Inner tank vent
- 16″ lockable access lid
- 4″ lockable inspection cap
- Bottom 1″ BSP Female outlet – Standard bottom outlet fitting kit supplied for straightforward pipework connection
- Manufactured from durable MDPE
- 10-year manufacturer’s warranty (upon registration)
Installation Requirements
This tank must be installed on a flat, level and non-combustible base that is capable of supporting the tank at full capacity. The base must extend fully beneath the tank footprint and provide continuous support across the entire underside.
Minimum Base Dimensions:
- Length: 3050mm
- Width: 2370mm
Installation must comply with current building regulations and applicable oil storage guidelines.






