Desuperheaters for Cogeneration Plants

Desuperheaters help condition steam before it reaches downstream equipment. By managing steam temperature, they can protect piping, steam traps and rotating seals from excessive heat. B-Tech Valve products are applied in power and process plant steam systems, with configurations selected according to the customer’s application and installation requirements.

The product range includes the SPAD Small Pipe Attemperator Desuperheater, Steam Attemperator, LPD Large Pipe Desuperheater and Replacement Parts for Desuperheater Valves. SPAD and Steam Attemperator products use fixed-nozzle spray-ring designs, while the LPD uses a probe-type variable-nozzle actuated control valve and desuperheater assembly.

The LPD Large Pipe Desuperheater is designed for steam pipes 6 inches and larger. It uses a probe-type variable-nozzle fully actuated control valve and is installed through a 90° flanged insertion on the steam pipe. Final sizing and selection should be based on the application and system requirements.

The SPAD uses a fixed-nozzle spray-ring design and clamps between two steam pipe flanges. It is fed water from a separate temperature control valve and is intended for smaller steam piping applications. B-Tech Valve sizes products around the customer’s application and installation configuration.

Applicable products are available in ASME B16.34 pressure classes from 150 through 2700, depending on the product and configuration. Products are rated for temperatures up to 1,200°F (650°C), where specified. Selection should confirm the required pressure class, temperature rating and application conditions.

Replacement Parts for Desuperheater Valves include American-made components compatible with ASME B16.34 pressure classes from 150 through 2700 and temperatures up to 1,200°F (650°C). The parts support steam flow optimisation, equipment protection and reduced boiler loads. Contact B-Tech Valve with the existing valve and application details for selection guidance.