Certified according to DIN ISO 9001 : 2015

Cleaning doors and flaps as well as stoke doors

We supply cleaning doors/flaps and stoke doors for incinerators

Langen Feuerungsbau GmbH

Langen Feuerungsbau manufactures a comprehensive range of fireproof doors and ports

We specialise in high-quality refractory cleaning doors, cleaning flaps and stoke doors for waste incineration plants, combustion plants and the energy industry. We manufacture these special doors and ports for power plants, industrial furnaces, boiler and drying plants and flue gas systems, among others. Customers can find a wide range of these doors in rectangular and square designs in our firing construction catalogue. Sophisticated hinge solutions ensure perfect tightness. All products are manufactured with the appropriate seals. Gas-tight designs are supplied by us with asbestos-free, woven grained gaskets with Inconel wire. Our cleaning doors and stoke doors are all centre-hinged, the displacements are mechanically machined by us, and the doors can also be manufactured in gas-tight or acid-proof versions. Our cleaning doors can be fitted with an insulating box or fireclay box on request, please state this when ordering.

We use grey cast iron and cast steel for cleaning doors and poke doors in furnace construction

Experienced, competent employees and modern machinery enable us at Langen Feuerungsbau to respond quickly to special requests at a fair price-performance ratio. Depending on the required temperature tolerance, our cleaning doors are made of different types of cast iron, which are usually heat-resistant up to 500 degrees Celsius. For higher temperatures up to 1300 degrees Celsius, we use heat-resistant cast steel for our fireproof special doors.

The types of cast iron we use for our cleaning doors are listed in our catalogue with the designations M01 to M19.

Retrofitting of the heat protection of the cleaning doors is possible

In addition, we can also equip our cleaning doors and poke doors with ceramic fibre plates and fireclay and firebricks to increase their temperature resistance. Cleaning doors and poke doors can also be combined in different quality levels within the incineration plant - depending on the material to be burnt, the pressure conditions and the temperatures at the respective position. In this way, a precise gradation of the individual qualities is guaranteed. Take advantage of our know-how in the manufacture and equipment of cleaning doors, we offer you sound advice.

Langen Feuerungsbau GmbH

In the event of future plant shutdowns, retrofit the firing system

Of course, it is also possible to retrofit your combustion system with the appropriate cleaning doors and stoke doors or to equip it completely new. At the next scheduled shutdown of the system, e.g., as part of an inspection or cleaning, we will be happy to replace cleaning doors and stoke doors or provide them with improved heat protection or new seals. We have many of our cleaning doors and stoke doors in stock at any time. Please contact us if you would like to arrange a good consultation on the different types, areas of application and equipment of cleaning doors.

Furnace construction: For cleaning doors we supply a wide range of spare parts and accessories

In addition to the standard doors and openings from our catalogue, we are able to produce and individually equip cleaning doors and cleaning flaps or stoke doors for furnace construction according to customer specifications. Our experience in machine and apparatus construction enables us to stock a wide range of special equipment, accessories and spare parts for cleaning doors and stoke doors in furnace construction. We offer:

  • Individual connections
  • Heat protection glasses
  • Seals
  • Adapter plates and adapter frames
  • Screw fittings and screw sets
  • Fireclay boxes and insulation boxes
  • Bolts, opening aids, frames, and handles
  • Recording option for a combustion chamber camera
  • Rinsing air connections for cleaning the inspection opening
  • Fireclay for lining the doors
  • Ceramic fibre tiles and fireclay bricks as heat protection
  • Fittings

Langen Feuerungsbau: Your competent partner for refractory cleaning doors and stoke doors for incineration plants

Would you like support in planning, projecting, or retrofitting your combustion system with cleaning doors? We manufacture special doors for incinerator construction in various designs. Call us or send us an e-mail. We will advise you on the precise fitting of your combustion system and, as a qualified supplier in the field of furnace construction, look forward to providing the optimum solution for your specific requirements.


Cleaning doors and flaps as well as stoke doors

Cleaning doors and flaps as well as stoke doors

Cleaning doors and flaps as well as stoke doors

Cleaning doors and flaps as well as stoke doors

Cleaning doors and flaps as well as stoke doors