VAJRA Industrial Water Heating Systems Available from 750 LPD to higher capacities Thermosyphon and Forced Circulation Systems Custom-made to suit specific applications Insulated Stainless Steel Tank Selectively coated, Copper-Copper Collectors with Ultrasonic Welded Fins for better heat transfer Collectors have corrosion-resistant, extruded aluminium sections with Stainless Steel Fasteners HHC Systems also available on reques.