Desuperheater
Desuperheater with an adjustable cross-section of the nozzle provides fine water mist injection into the steam line over a wide range of flow rates. The system consists of multiple nozzles with different flow capacities, which makes it possible to adjust the temperature with high accuracy under any operating conditions. Desuperheater can be used with a cooling water inlet pressure of up to 18.0 MPa, which, combined with a high degree of tightness, eliminates the need for additional pressure reducing valves often required in similar applications.
Technical specifications
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Nominal diameter DS 1525/2525 water DN 25 to 40 mm / steam DN 80
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Nominal diameter DS 1550/2550 water DN 40 to 80 mm / steam DN 100
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Nominal pressure PN 2,5 to 42 MPa
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Operating temperature up to 454 °С
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Flow characteristic linear / equal percentage / modified linear
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Rangeability 10:1 to 80:1
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Seat leakage class V according to GOST 9544-2015
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Body material heat-resistant steel / stainless steel
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Packing material graphite
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Connection flanged / welded
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Actuator pneumatic spring-diaphragm / electric
Execution options
Four different positions of water flange
Desuperheater is available with the option of installing the water flange in four different positions, ensuring convenient installation and connection to the pipeline system regardless of orientation.
Balanced and unbalanced plug
For easier operation and minimized wear in high pressure drop applications, the valve can feature a balanced plug. Alternatively, for simpler systems with low pressure drops, an unbalanced plug can be used.
Double stage pressure reduction for high pressure drops
The valve is equipped with a double stage pressure reduction system that allows for safe reduction of steam and water pressure drops, preventing cavitation and severe water hammer in systems with high pressure drops.