Three-pass steam boilers are wet-return, shell-and-tube type equipment. The combustion gases make three passes through the fire tubes before being expelled, which optimizes heat transfer and improves energy efficiency. This design ensures efficient steam production with reduced fuel consumption.

The boilers are available with steam production capacities ranging from 1 to 10 tonnes per hour, thus covering a wide range of industrial applications. This range meets the needs of both small installations and sites with high steam demands.

Standard boilers are designed for a working pressure of 10.5 kg/cm², but can be configured to withstand pressures up to 17.5 kg/cm² depending on the specific installation requirements. This flexibility allows for adaptation to the diverse demands of industrial processes.

These boilers can operate on various fuels, including heating oil, natural gas, LPG, or in a dual-fuel configuration. This versatility allows users to choose the option best suited to their geographical location and fuel availability.

The design, with its large steam volume and significant evaporation surface area, produces high-quality dry steam, essential for demanding industrial applications. This feature ensures stable production and reduces pressure fluctuations during peak demand.

The boilers are equipped with two-stage or continuously modulating burners, depending on the capacity. These systems allow for precise combustion control and automatic adaptation to steam demand, thus optimizing energy consumption and reducing component wear.