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Indirect unvented stainless-steel hot water storage cylinder with external expansion vessel design

Tempest Indirect hot water storage cylinders feature an internal coil and are designed for use with a gas or oil-fired boiler, as the main heat source (either sealed system or open vented). Manufactured from Duplex stainless-steel, the cylinders are supplied with a factory-fitted 3 kW immersion heater to provide back-up heat.


Product Features
  • Duplex stainless-steel provides superior corrosion resistance
  • 316L grade stainless-steel 22mm compression fittings and coils
  • Supplies mains pressure hot water and high flow rates
  • Fast reheat
  • Factory-fitted temperature and pressure relief value set at 7 bar / 90°C
  • Remote expansion vessel with factory-fitted wall mounting bracket
  • Full unvented kit supplied
  • Highly efficient
  • Fully insulated to minimise any heat loss
  • Factory-fitted 3kW immersion heater 
  • Available in 90–500 litre capacities
  • Lifetime manufacturing warranty on inner container (2 years on components)*
  • Renewable and bespoke options available

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