HydroHeat Supplies Hydronic System

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AquaSystem AR / AVR-Plus Expansion Tanks

AquaSystem AR / AVR-Plus Expansion Tanks

Hydroheat Supplies are importers of the premium AR / AVR-PLUS Expansion Tanks from AquaSystem. The AR / AVR range are high pressure replaceable membrane expansion tanks suitable for commercial use and larger systems.

The AR / AVR range of high pressure tanks are rated to 10 Bar pressure, feature a Stainless Steel Flange, strong Butile Rubber Membranes, and have an extended 5yr Warranty. Available in sizes from 8 litres to 500 litres.

Hydroheat Supplies have also developed a fill kit for these tanks which incorporates automatic fill valve isolating valve, pressure relief valve and automatic air vent, all pre-assembled on a brass air separator.

Trade / Specifiers Portal

Access AquaSystem AR / AVR-Plus Expansion Tanks Data, Spec & Install Sheets in our Trade / Specifiers Portal.


  • Stainless Steel Flange
  • Rubber Butile Membrane
  • Capacity for Temperature Extremes -10º to +100º
  • Painted Counter Flange
  • High Pressure (10 bar)
  • 2,5 Standard Precharge Pressure
  • 3/4″ or 1″ Connection
  • 5 year Warranty