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Fisher™ DSA Steam Conditioning Desuperheater
Fisher DSA Desuperheater
The Fisher DSA desuperheater uses high-pressure steam for rapid and complete atomization of spraywater in low velocity steam lines.
This desuperheater is installed through a flanged connection on a DN 200 (NPS 8) or larger pipeline. This desuperheater is intended for applications requiring high rangeability.
Fisher™ DSA Steam Conditioning Desuperheater


Critical Service
Steam Conditioning
SA105, F22, F91
Operating Temperature
High Temperature
Pressure Class
Process Connection Type
Flanged, Butt Weld, RTJ, Socket Weld
Valve Size
NPS 3, NPS 4, NPS 6
Valve Size Standard
Other Configurations
Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.


  • Nozzles can be maintained or replaced without having to replace the entire unit.
  • The DSA desuperheater is capable of 40:1 rangeability.
  • DSA desuperheater can be located wherever is convenient in the pipeline.
  • In the DSA desuperheater, high-pressure steam is mixed with the spraywater to produce a critical or near-critical pressure drop in the atomizing steam for a very high velocity. The high velocity disperses the spraywater into very small particles