170 Litre Direct Unvented Cylinder
Crafted from high-grade duplex stainless steel and powered by twin 3 kW immersion heaters, the 170 L Direct Unvented Cylinder delivers mains-pressure hot water without the need for gas or oil boilers. Its patented internal venturi expansion system maintains a self-sustaining air pocket—eliminating external expansion vessels and reducing both installation time and lifetime maintenance. Manufactured under stringent UK quality controls and backed by a 25-year corrosion warranty, this cylinder ensures reliable performance in demanding residential and commercial settings while simplifying the installer’s workflow with minimal moving parts and clear, contractor-friendly specifications.
