Firetube Boilers

FX - small capacity steam boilers

Capacity in kW 30 - 100 kW
Steam production in kg/h 50 - 150 kg/h
Design pressure 5 bar
Fuel gas, light oil

Monobloc, instantaneous, flame inversion, wet-base, fire tube steam generator. Suitable for both liquid or gaseous fuels, for steam production from 50 to 150 kg/h, with project pressure of 5 bars, complete with regulation and safety accessories for automatic operation. Complementary skid with ancillaries for easy installation upon request.

Ideal for processes requiring 3-4 bar steam up to 100 kW
Designed with special consideration to breweries and dry cleaners.


OBYONE – 3 Pass Reverse Flame Steam Boilers

OBYONE is a high pressure, three pass reversed flame, wet back, high efficiency steam boiler. Standard pressure up to 12 bar (higher pressure available on request) and output from 300 to 6000 kg/h. The boiler is high efficiency and copes well with instantaneous demand due to its horizontal design and consequently larger water evaporation area. It's suitable for gaseous fuels as well as liquid fuels with easy furnace and smoke tube access for maintenance.

Capacity in kW 200 – 3750 kW
Steam production in kg/h 300 – 6000 kg/h
Design pressure 12/15 bar
Fuel gas, light & heavy oil

Every model is complete with safety and operation control accessories ensuring safe and reliable operation meeting and exceeding the industry .

Design features

By means of the reverse flame principle the smoke gases in the combustion chamber are diverted to the front, then reversed again to the smoke tube sections and discharged through the chimney connection. The appliance is designed to ensure low heating loads in the combustion chamber and low superficial loads to achieve the best heat transfer and efficiency.

  • Boiler body: is made up of a cylindrical shell and a wet back furnace, made of high quality steel. The welding seams are carried out by qualified personnel in compliance to certified procedures and are subjected to Non Destructive Tests, in accordance to an internal “Manufacturing and Control” program. Once the boilers have been manufactured they are subjected to hydraulic testing
  • Smoke tubes: made of high quality steel, are welded to tube plates. Pipes are equipped with helical turbulators for optimal heat distribution.


The OBYTRICE is a three pass, wetback steam boiler. It is a single block unit, featuring excellent efficiency and advanced technical solutions, designed and built to ensure maximum reliability and duration, considering the industrial use for which it is mainly intended.

The construction features high water volume and high energy content, a characteristic that allows you to make sudden and very high steam withdrawals. The large mirror of evaporating fluid also prevents the entrainment of water droplets to the steam outlet; the steam produced is therefore always of high quality as it features a very high steam fraction.

The corrugated furnace, fully designed and built in-house, is sized in order to achieve reduced volumetric thermal loads; this results in optimum operation both with liquid and gaseous fuels, as well as the reduction of pollutants emitted into the atmosphere. The surfaces in contact with the carrier fluid are widely sized to ensure a high coefficient of heat exchange, in order to achieve high combustion efficiency.

Capacity in kW 1050 – 15650 kW
Steam production in kg/h 1700 – 25000 kg/h
Design pressure 12/15 bar
Fuel gas, light & heavy oil

Benefits of the OBYTRICE

  • Fully flanged tube plates
  • High steam fraction at each load
  • Great reliability in continuous operating mode
  • Can be configured as required
  • High control management technology

Industrial Watertube

OBE88 O'Brien Watertube D Type Steam Boiler.

Capacity in kW 1000 – 20000 kW
Steam production in kg/h  1600 – 32000 kg/h
Design pressure 12/16/25 bar
Fuel gas

Note: Bigger capacities and superheated options available upon request


  • Furnace construction utilizes a welded-membrane wall design
  • Convection or radiant superheaters
  • Large, water-cooled, gas-tight furnace areas
  • Boiler, burner, and control package solutions
  • Radiant superheater designs are available

The O’Brien Watertube D-style industrial watertube boiler provides steam to industrial processes covering medium to large scale steam demands and pressure requirements. It can be customized to provide up to 565°C superheated steam. We offer both single- and dual-stage integral superheater systems with optional temperature control over turndown. To maximise efficiency they get paired with hi turndown ratio burners, large capability controls and an economiser with further efficiency booster options.

Electric Steam Boilers

FLASH is an instantaneous steam boiler.

Its features make the FLASH boiler an ideal steam producer for laundries and ironing machines, able to meet dry steam small and medium requests, preventing thermal plant overloads. The boiler is ready for a quick and easy installation, it’s only needs are a connections to a power, hydraulic, steam lines and drain connection. Electrical connections are made according to the safety norms, and converge to a single centralized panel.

Capacity in kW 20 – 180 kW
Steam production in kg/h  32 – 280 kg/h
Design pressure 5 / 7 bar
Fuel Electricity

The boiler is provided with a level control, automatic water feed. Simple and effective utilization, thanks to the front control panel. Electric and automatic steam boiler, with variable power from 15 to 180 KW. The boiler can be fed directly from the mains or from a special stainless steel reservoir. The electric automatic steam boiler is particularly suitable for polished surface ironing press operations (indicated for cotton material ironing) or equipped with a steam gun, and indicated for fur tapering and ironing. Available with a single group of resistors (three elements) or with two groups of independent resistors (six elements).