Attemperators for Coal-Fired Boilers

B-Tech Valve offers the SPAD Small Pipe Attemperator Desuperheater, which uses a fixed-nozzle spray ring and flange clamp mounting, and the LPD Large Pipe Desuperheater, which uses a probe-type variable nozzle control valve and 90-degree flanged insertion. The Steam Attemperator is also available as a fixed-nozzle spray-ring design sized for each customer’s application.

The SPAD Small Pipe Attemperator Desuperheater clamps between two steam pipe flanges. It uses a fixed spray-ring nozzle design and receives water from a separate temperature control valve. Its flange clamp arrangement is intended for small-pipe applications, while final selection should consider the steam system, line configuration and required operating conditions.

The LPD Large Pipe Desuperheater is intended for steam pipes 6 inches and larger. It combines a probe-type variable nozzle with a fully actuated control valve and installs through a 90-degree flanged insertion on the steam pipe. This design is suited to applications requiring variable spray control and should be selected against the plant’s operating and piping requirements.

The product information lists ASME B16.34 pressure classes 150, 300, 600, 900, 1500, 2500 and 2700 for the SPAD, Steam Attemperator and LPD product offerings. The appropriate class depends on the steam system design and operating conditions. B-Tech Valve can use the application details to help identify a suitable configuration.

The SPAD Small Pipe Attemperator, Steam Attemperator and LPD Large Pipe Desuperheater are listed with temperature ratings up to 1,200°F (650°C). Actual selection should account for the boiler system’s steam temperature, pressure, piping arrangement and control requirements. Application information is needed to confirm suitability for a specific coal-fired boiler installation.

B-Tech Valve provides application-engineered, American-made desuperheater and attemperator valves for power and process plants. Selection support can consider line size, steam conditions, installation method, pressure class, temperature requirements and the desired spray-control arrangement. The company also lists stocked products for quick turnaround, subject to product availability and the specific application.