Harlequin Diamond 1650HZB 1650 Litre Bunded Oil Tank
The Harlequin Diamond 1650HZB 1650 Litre Bunded Oil Tank is designed for the safe and compliant storage of heating oil in domestic, commercial and agricultural installations. Its robust construction and generous capacity make it an ideal choice for properties requiring reliable long-term fuel storage.
Manufactured from durable Medium Density Polyethylene (MDPE), this integrally bunded oil tank offers excellent corrosion resistance, low maintenance requirements and long-lasting performance. The double-skinned “tank within a tank” design provides secondary containment, helping to protect the surrounding environment in the event of an internal leak.
Designed for straightforward installation, the tank features a bottom outlet with a 1″ BSP female thread, a standard 2″ BSP fill point for fuel deliveries, lockable access and inspection points, and provision for fitting an electronic contents gauge.
A bunded oil tank is often described as a “tank within a tank”. The inner tank stores the fuel, while the outer bund provides secondary containment. As a result, it helps prevent ground contamination and supports compliance with current oil storage regulations.
Suitable for domestic heating oil storage, commercial premises and agricultural applications, the Harlequin Diamond 1650HZB combines durability, environmental protection and dependable performance in one practical, high-capacity design.
Key Benefits
- 1650 litre heating oil storage capacity
- Integrally bunded double-skinned construction
- Outer tank holds a minimum of 110% of the inner tank capacity
- Bottom outlet with 1″ BSP female thread
- 2″ BSP male fill point for standard fuel deliveries
- 16″ lockable access lid
- 4″ lockable inspection cap
- 32mm aperture for optional electronic contents gauge
- Inner tank vent
- Moulded-in lifting handles
- Manufactured from durable MDPE
- Suitable for domestic, commercial and agricultural use
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: 1610mm
- Width: 1950mm
Installation must comply with current building regulations and applicable oil storage guidelines.


