The OpDSH VVent desuperheater is a fixed area nozzle spraying device which injects water in the outlet of a venturi-shaped section. The excellent and rapid atomizing of sprayed water is obtained through the combination of increased velocity of steam in the throat section with the same high efficiency nozzles of VFlow variable area desuperheaters. Additionally, the intense turbulence is enhanced by the sudden interruption of the venturi profile after the injection point and improves the mixing of water and steam, which results in quick evaporation of water.

One or more nozzles are available to fulfill a wide range of flowrates as outlined in the Cv table. Low velocity steam flows can be thoroughly handled as well with a minimum approach temperature of 41°F over saturation. They are primarily intended for moderate load changes and where accurate temperature control is essential.

Common Applications

• Steam Processes
• Heat Exchangers
• Ejectors
• Pressure Reducing Stations
• Drum Dryers