VariFlow series from Carraro is a multi-jet desuperheater system, designed to combine efficient water atomization with high regulating power.
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Carraro - Desuperheater VariFlow
Accurate control of steam temperature
Several applications require ‘turndowns’ as well as a simple mechanically regulated steam cooling. This need not necessarily be done by sophisticated and expensive equipment. A Carraro VariFlow desuperheater (steam conditioning) fills the gap between simple cooling and advanced high performance "turndown" solutions
Carraro's Variflow has a large selection of nozzle combinations (numbers and sizes) that provide accurate control of the steam temperature, regardless of the conditions. By means of the associated actuator and positions, complete control of water injection for the steam cooling process is achieved and no additional control valves are required
VariFlow is designed for all applications in steam cooling, almost without limitations on temperature and steam pressure
Typical power plant applications are:
- Turbine by-pass stations
- Steam to capacitor
- Turbine seal
- Cooling of primary steam to process
- Burns NOx control
- Water atomizer for oil burner
- Re-heat
Can be supplied with water connection at the top (standard) or side connection (on request). It is recommended to install a filter (strainer) before the water connection
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| Function | Temperature control of the overheated water |
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| Size | Water: 1 ”, 1 1/2”, 2 ”and 3” (DN 25, DN 40, DN 50 and DN 80) |
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| Steam flange | 3” and 4” (DN 80 and DN 100) |
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| Steam line | 4” to 40” (DN 100 to DN 600) |
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| Connection | Flanges (ANSI and PN) |
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| Pressure step | Max ANSI 2500, PN 25-400 |
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| CV | From 0.0055 to 21.15 |
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| Material |
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| Temperature | Max 570 °C (Steam side) |
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| Number of nozzles per head | 6 to 9 |
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| Rangeability | Up to 50: 1 |
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| Water volume | Max 50 m3 per. hour |
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| Delta P |
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| Cooling | Max: Up to 7 °C above the saturation point of the outlet vapor |
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Product specifications and manuals
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Carraro - Brochure VariFlow
English | pdf -
Carraro - Manual VariFlow
English | pdf
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