OLMAR vertical boilers are of aquatubular type. They are equipped with wide interior drums for water circulation. Its strength and reliability make them especially indicated to be used in hard conditions. At the same time its durability make them the best choice for small and medium-size companies where the working conditions are not the best. In addition to that, its upright position makes them ideal when space is a problem. They are available in small and medium size and with gas and liquid fuel burners.