High Pressure Steam Valves for Class 900 to 2500

The listed desuperheater products are available in ASME B16.34 pressure classes including 900, 1500, and 2500, along with additional classes ranging from 150 through 2700. The appropriate class should be selected against the system design requirements, operating conditions, piping connections, and applicable engineering specifications.

Desuperheaters introduce water into a steam line to reduce superheat and condition the steam. The SPAD uses a fixed-nozzle spray ring, while the LPD uses a variable-nozzle, fully actuated control valve and desuperheater assembly. Water is supplied through a separate temperature control valve.

The SPAD is a fixed-nozzle spray-ring design that clamps between two steam-pipe flanges and is suited to smaller piping applications. The LPD is a probe-type, variable-nozzle assembly with a fully actuated control valve, installed through a 90-degree flanged insertion for steam pipes 6 inches and larger.

Applications listed for these products include power plants and process plants. Typical functions include improving steam heat-transfer capability, protecting piping and steam traps, protecting rotating seals, increasing steam flow, decreasing boiler loads, and reducing fuel costs in high-temperature steam systems.

The listed products are temperature rated up to 1200°F (650°C). Final suitability depends on the complete application, including steam conditions, pressure class, piping arrangement, control requirements, and materials or construction specified for the installation.

Yes. The Steam Attemperator is identified as being sized for each customer's application, and B-Tech Valve positions its products as application-sized solutions. Selection should consider pipe size, pressure class, steam temperature, installation method, control requirements, and the protection or heat-transfer objective.