SuperFlow Horizontal Unvented Cylinder Range by World Heat.



SuperFlow Twin Coil Unvented Cylinders


The World Heat Cylinders’ SuperFlow Twin Coil range features high-quality stainless steel unvented cylinders, specifically designed for applications utilising two separate heat sources. Typically, these are ideal for integrating a conventional boiler with a renewable energy source, such as solar thermal panels or, in some configurations, a heat pump. Our SuperFlow Twin Coil Unvented Cylinders are engineered to provide maximum efficiency and flexibility, accommodating capacities from 50 litres up to 10,000 litres to suit diverse domestic and commercial projects.

Manufactured from premium Duplex stainless steel, these cylinders offer exceptional corrosion resistance and durability. They incorporate high-density, eco-friendly foam insulation to minimise heat loss, ensuring that energy from both heat sources is effectively stored and readily available.



Advantages of SuperFlow Twin Coil Systems


SuperFlow Twin Coil cylinders provide several key benefits for modern heating systems:

  • Dual Heat Source Utilisation: Efficiently harness energy from two independent heat sources. For instance, a lower coil can be dedicated to a renewable source like solar thermal, providing primary heating, while an upper coil connects to a boiler for backup or boost heating.
  • Maximised Renewable Energy Contribution: Prioritises the use of free or lower-cost renewable energy, reducing reliance on fossil fuels and lowering energy bills.
  • Consistent Hot Water Supply: Ensures reliable hot water availability, even when the primary renewable source is insufficient, thanks to the secondary coil.
  • Space Saving: Integrates two heat inputs into a single cylinder, often saving plant room space compared to separate buffer and DHW cylinders.
  • High Flow Rates: As unvented cylinders, they deliver mains pressure hot water to multiple outlets.
  • Durability & Guarantee: Constructed from high-grade stainless steel and backed by our 25-year vessel guarantee.
  • Quality Manufacturing: Built to ISO 9001 standards in our UK facility.


Bespoke Twin Coil Cylinder Options


While our standard SuperFlow Twin Coil range covers many common applications, World Heat Cylinders specialises in providing bespoke solutions. If your project requires specific coil sizes, non-standard tapping positions, particular orientations (including horizontal twin coil units), or integration with unique control strategies, our technical team can assist. We can design and manufacture a twin coil unvented cylinder tailored precisely to your system’s requirements.

For further information on customisation or to discuss your unique project, please contact our technical sales support team on 0161 343 8610 or email sales@whcylinders.co.uk.



SuperFlow Quality & Manufacturing Standards


The renowned quality of our SuperFlow Twin Coil unvented cylinders stems from our dedication to superior materials and precise manufacturing techniques. Key quality assurances include:

  • A comprehensive 25-year vessel guarantee, reflecting our confidence in the materials and manufacturing expertise.
  • A robust, high-quality powder-coated mild steel external finish for durability and aesthetics.
  • Efficient, environmentally friendly foam injected insulation with zero ozone depletion potential (ODP).
  • All units are manufactured in adherence to stringent ISO 9001 quality management protocols.


SuperFlow Twin Coil Datasheets & Manuals


Download detailed technical specifications and installation guides for our SuperFlow Twin Coil Unvented Cylinder range:

If you require information for a model not listed or have specific technical queries, please contact our team for support.

Twin Coil Unvented Cylinder