: Vitomax HS type M73B

Steam output

: 0.5 to 4 t/h

Fuel Type

: Light fuel oil (HEL), liquid or (bio) gas

Vitomax HS type M73B - compact and efficient

Take advantage of these benefits

- Energy-saving thermal insulation
- Large steam chamber with low load
- High efficiency of up to 95.5 percent
- Water-cooled burner entry point at the front and water-cooled rear reversing chamber
- Low-stress design

High pressure steam for industrial use

The Vitomax HS type 73B high pressure steam boiler is the right solution for large industrial concerns, such as those involved in food processing, fertilisers, construction material, paper, beverage, chemical and pharmaceuticals, as well as hospitals and refineries.

The boiler provides a continuous supply of steam at an output of 0.5 to 4 t/h. Its operating pressure extends from 6 to 20 bar (up to 30 bar on request).

The lateral arrangement of the flame tube resulted in a highly compact boiler design that meets all the requirements for efficient steam generation.

Large steam chamber with low pipe load

The spacing between the smoke tubes, as well as from the smoke tubes to the boiler shell and to the flame tube, substantially exceed requirements.

The shearing force on the end face floors caused by different linear expansion in the smoke tubes and the flame tube is therefore extremely low.

The corner stays of the boiler are always arranged in pairs. As a result, forces are distributed throughout the boiler, reducing stress and increasing its service life.

Product cross-section



Steam output (t/h)

0.5 to 4 t/h

Boiler efficiency

to 95.5 (with integrated economiser)

Permissible operating pressure

6 to 20 bar (30 bar on request)


Light fuel oil (HEL), liquid or (bio) gas


Commercial, industrial, construction and modernisation

Control engineering

Simplified operation through programmable logic controller (PLC) with intuitive ergonomic graphical user interface (10.4 inch color touch panel)

Other features

Pass boiler with and without economiser. Oil / gas high pressure steam boiler in accordance with the requirements of the EC Pressure Equipment Directive and the TRD regulations. A boiler of traditional design with side-mounted flame tube.


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