VENMAN SA is an OEM company specializing in solar thermosiphonic water tanks and Hot water central heating boiler systems. Our products cover two main groups, the tanks for thermosiphon systems and those for forced circulation systems. In the first group the capacity range is from 120 to 500 litres whilst in the second the corresponding litres are from 150 to 1500. ISO certified and all the products are constructed according to the European and international standards.