Steam Trap Selection Help

What is a Steam Trap?

When steam condenses it gives up its enthalpy of evaporation (latent heat) to form a condensate. This condensate contains only enthalpy of saturated water (sensible heat). To ensure maximum heat transfer, this condensate must be removed from the steam space. Air and other incondensible gases carried in with the steam form another barrier to heat transfer and must also be removed.

Steam traps are automatic devices which allow air and condensate to be discharged but hold back steam. They do this either by sensing the difference in temperature (Thermostatic traps), the difference in density (Mechanical traps) or by sensing the difference in static and dynamic pressure of hot condensate passing through them (Thermodynamic traps).

The most common traps in industry are the Ball Float and the Thermodynamic followed by the Inverted Bucket.

If you do not know any of the fields requested by our website when selecting your Steam Trap then please do not hesitate to contact us and we can assist you in buying the correct trap for your application.

Please click here for our full Steam Trap Selection guide.

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A diagram of a Typical Steam System

Steam -system1

An Example of a Steam Trap Installation

  1. Steam Trap
  2. Single Window Sight Glass
  3. Non-Return Valve
  4. Globe Valve
  5. Strainer

Steam Trap Installation Diagram

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