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| Domestic Heating | Central Heating Boilers | Oil Condensing Boilers | Grant Oil Boiler Range | Grant Unvented Cylinders (Direct & Indirect) | Grant Duowave Direct Cylinders
Available in 170, 200, 250, 300 & 400 litre capacities, in both direct and indirect options Manufactured from high quality 1mm thick corrosion resistant stainless steel. Insulated with of CFC free, fire retardant polyurethane foam, to keep heat loss to a minimum. No Anode required. Labeled and colour coded tappings for ease of installation. High Efficiency internal coil constructed with 22mm corrugated stainless steel, giving maximum heat transferrence, high efficiency and 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 DuoWave 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.
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