DeSuperHeater

MULTIPLE NOZZLE DESUPERHEATERS

PCV’s spray nozzle-type desuperheaters are engineered with multiple nozzles to ensure optimal performance and exceptional rangeability. These specialized nozzles deliver fine water atomization, even at minimal flow conditions, while remaining unobstructed by the throttling piston.

For precise steam temperature control under challenging conditions such as low steam velocity or minimal water-steam differential pressure.

PCV recommends using a combination of spray nozzles in varying sizes to maintain effectiveness.

The split-body design simplifies maintenance by allowing flexible orientation of the water connection relative to the spray nozzles and enabling easy replacement of the seat.

the body

Size of water connection: 1″ to 3″

Size of steam connection: 3″, 4″ or 6″ depending on the selected Cv

Connection: ASME Flanged, ANSI B16.25, Butt-welding end on request

Pressure Ratings:

Water side: ANSI 150# to 2500#
Steam side: ANSI 150# to 2500#
Construction Method : Machining and fabricated forged steel

Material: Any Material considering the process requirements (CS,AS and SS)

Flow Control and Sealing Mechanism

Flow is precisely controlled by a specially designed piston that slides within the spray nozzle head. Sealing is achieved through a plug and seat arrangement, ensuring tight shutoff. The plug size is calculated based on the steam connection flange size and the configuration of the spray nozzles. The piston is guided by the internal structure of the spray nozzle head, ensuring stability and accurate movement. The seat is securely clamped between the upper and lower body sections, enabling easy maintenance. Shutoff performance meets or exceeds Class V as per IEC 60534-4 standards.

Control System and Accessories

The control system includes the PCV diaphragm actuator, positioner, solenoid valves, and any additional components required to meet the customer’s control specifications.

All positioners—whether Foundation Fieldbus (FF) or HART—are sourced from leading global manufacturers such as ABB, FISHER, EMERSON, Siemens, SMC, and Norgren.

Other accessories are provided by top-quality brands, either from trusted Korean suppliers or other reputable international manufacturers, ensuring reliability and performance in every application.

Spray Nozzle Protection

To prevent obstruction and ensure long-term reliability, all PCV desuperheaters are typically equipped with a filter installed on the water-side connection. This safeguard helps maintain consistent performance by protecting the spray nozzles from particulate contamination.