Grant Engineering
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Grant DuoWave Twin-Coil Range

GDW 200
GDW 250
GDW 300
GDW 400


  • Available in 200, 250, 300 & 400 litre capacities.

  • Manufactured from high quality corrosion resistant stainless steel.

  • Insulated with of CFC free, fire retardant polyurethane foam, to keep heat loss to a minimum.

  • Internal coils are constructed from 22mm stainless steel, giving high efficiency as well as quick recovery.

  • Flow rates can be as much as 55 litres per minute at 2.1 bar pressure (depending upon the incoming flow rate available).

  • All cylinders are 580mm in diameter.

  • 2-year guarantee on all electrical and mechanical components supplied with the cylinder.

  • 25-year guarantee on the stainless steel cylinder shell.

Grant DuoWave Twin-Coil Range
CLEAN, MODERN DESIGN FOR CONTEMPORARY LIVING
Grant DuoWave Unvented Twin-Coil Cylinders are suitable for use with solar thermal installations and applications where a secondary heat source is being utilised.