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Maintenance of steam traps

Steam traps are an essential part of a well-functioning steam system. They ensure that condensate is drained effectively and efficiently. Defective steam traps affect the efficiency of the entire steam system and can result in losses of several thousand euros per steam trap per year¹.


There are a variety of causes that can lead to the deterioration or failure of a steam trap, such as incorrect installation, contamination, mechanical damage, overheating, corrosion, wear, etc.

Defects are noticeable as follows:

  • Unusual noises

  • Unusual temperature of the boiler room

  • Noticeable water accumulation

  • Excessive steam

  • Failure of the condensate water pump

  • Decreasing steam pressure

  • Increased energy costs

  • Water hammer

To avoid further damage, it is necessary to identify and repair defective steam traps as quickly as possible.

It is essential to know whether the steam trap is open or closed at the time of failure:

If a steam trap fails in open position, steam can escape through the outlet. This wastes money and energy, and affects the overall pressure and efficiency of the entire system.

Less common, but potentially more dangerous, are failures of steam traps in closed position. Condensate cannot drain, backs up into the system and causes problems with piping, machinery and more (term "water hammer").

What can be done to reduce or avoid steam trap defects and failures?

In order to detect defects and avoid unplanned failures, regular maintenance and inspection is necessary.

Our ultrasonic condition monitoring system uses ultrasonic sensors to detect defective steam traps and leaking valves and derives the corresponding need for action so you can plan the replacement or repair.

The risk of damage and system failure is minimised, machine and system performance is improved and energy-saving potential is optimally utilised.

Our solution is simple, mobile and ready to use.

For more information, please visit

¹ Folder "Dampfsysteme", Bundesministerium für Land- und Forstwirtschaft, Umwelt- und WasserwirtschaftSteam

Author: DI. Mag. Markus Loinig




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