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Ultrasonic Inspection: Steam Traps

Introduction

Automatic valves, called Steam Traps, are installed in boiler systems to remove condensate (condensed steam), air, and non-condensable gases while preventing or minimizing the passing of live steam. Steam traps are used to heat buildings efficiently or maintain heat for specific manufacturing processes.

The collection of condensate in a heating system reduces the flow capacity of steam lines and the efficiency of heat transfer equipment. Excess condensate can also cause a "water hammer", a potentially dangerous situation. Non-condensable gases can cause corrosion. Furthermore, any steam that passes through a trap provides no heating service. There are many different types of steam traps available to work in different environments and with different equipment.

"15 to 20 percent of the steam traps found in facilities that use steam for building heat and/or facilitating manufacturing processes are inoperative."    - Alliance to Save Energy

Ultrasonic technology can be used for quick diagnosis of the steam trap condition. Additionally, testing with an ultrasonic sensor, such as the CTRL UL101 eliminate the mess and uncertainty of other more outdated methods such as using hot melt crayons or listening with a screwdriver.

Next: Types of Steam Traps>>