For homeowners seeking a blend of durability, aesthetics, and high-specification features, Diamond Oil Tanks are an industry-leading choice. Manufactured by the renowned Harlequin Manufacturing, Diamond tanks are engineered to provide decades of reliable service. Available in a wide range of capacities and shapes, from vertical space-savers to low-profile horizontal models, Diamond tanks are designed to sit discreetly in any residential environment.
Every tank in the Diamond collection is bunded, featuring a dual-wall construction that offers the highest level of protection against leaks and environmental spills. Fully compliant with BS EN ISO 9001:2015 and OFTEC standards, these tanks meet all UK building regulations. The high-grade, UV-stabilised polyethylene ensures that the tank remains structurally sound and retains its colour even when exposed to the harshest weather conditions.
10-Year Peace of Mind: All Diamond bunded tanks come with a 10-year manufacturer’s guarantee, reflecting the brand’s commitment to quality.
Complete Installation Kits: Most models include a Watchman Sonic wireless level gauge and a premium filter kit as standard, ensuring a smooth and professional installation.
Biofuel Ready: Future-proof your home with Diamond's HVO-compatible tanks, ready for the next generation of sustainable heating fuels.
Enhanced Security: Lockable lids and heavy-duty construction provide an effective deterrent against fuel theft and unauthorised access.
Whether you need a slimline tank to fit down a narrow side passage or a large-capacity horizontal tank for a rural farmhouse, the Diamond range offers a solution. At The Tank Shop, we provide expert advice to help you select the correct model, ensuring your new tank meets all necessary fire separation distances and environmental safety requirements.
