Buffer & Thermal Storage Vessels

Found in a variety of systems, a buffer or thermal storage vessel provides additional storage capacity. With a greater demand for renewable energy systems, they offer both sustainability and substantial savings.

Coupled with instantaneous water heaters, vessels are connected in parallel with a pump circulation to ensure a flow between the vessel and the water heater.


  • Additional capacity when peak demands exceeds hot water generation.
  • Capacity up to 50,000 litres and test pressures of 30 barg, although larger capacities and higher pressures available.
  • Charged during low or no demand.
  • Low grade heat or smaller energy sources can be utilised.
  • Vented and unvented systems.
  • Supplied horizontally or vertically.
  • Increased energy efficiency of the heating system.
  • Rapid pay back as heating costs significantly reduced.
  • Can be connected and combined with several power sources.
  • Insulation for chilled water applications.
  • Vessels manufactured in carbon steel, stainless steel or copper.

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