The single fire-tube boiler with water-cooled reversal chamber and burner transit can supply steam to 35 t/h. The supplied pressure can vary from 0.5 to 40 bar(g).
The hot water boilers deliver a capacity of 0.5 to 22 MW. The design temperature for the hot water boilers can be up to 200 ^oC.

The double fire-tube boiler with water-cooled reversal chamber and burner penetration has a capacity of 70 t/h and pressures of 0.5 to 40 bar(g).

As hot water boilers, the capacity is between 0,5 and 44 MW. The design temperature for the hot water boilers can be up to 200 ºC.

To achieve better efficiency, an economiser can be installed. It makes optimum use of the waste heat and water in the steam boiler or hot water boiler. This leads to remarkable efficiency gains and significant (cost) savings.

Fire-tube boilers can also be equipped with a superheater, making it possible to reach steam temperatures of up to 440 ºC .