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Masoneilan DSH Model Desuperheater

  • Size

    Pipe Sizes: 4” through 48” (100 through 1200 mm)

    Ratings & Connections

    flanged: ANSI 150 - 2500 UNI-DIN 10 - 400; welded: BW

    Body Materials

    carbon steel; chrome-moly

    Spray Nozzle Cv

    Individual nozzle Cv = 0.4, 0.8, 1.5, 3.0, 5.0, 10.0

    Combined DSH Nozzle Cv range 0.4 through 80+

    Water Manifold

    Connection size 1” through 6” (25 through 150 mm); welded & flange options



    The DSH Desuperheater serves as a means of controlling steam temperature, mainly in boiler and Heat Recovery Steam Generator (HRSG) applications within the power industry. The Masoneilan DSH is designed to meet ASME B31.1, and can be manufactured under ASME Boiler & Pressure Vessel Code Section 1 welding S-Stamp to comply with installations within the boiler or HRSG boundary limits.

    During operation of the DSH Desuperheater, steam enters the DSH and atomized water is sprayed into the flow to reduce the steam temperature, as the water evaporates into the process steam. The spray water is controlled by a separate water supply valve, in response to a control loop that monitors downstream pressure.

    Within the DSH Series, there is both a flow profiler style (DSH-110) and a liner style desuperheater (DSH-120).


Masoneilan DSH Model Desuperheater

Masoneilan DSH Model Desuperheater

Applicable Industries

Power Generation, Refining, Petrochemical, Pulp & Paper


Key Applications

Interstage Attemperator, Terminal Attemperator, Process Steam Desuperheater