PRDS: Pressure Reducing and DeSuperheating System. Steam PRDS is used for Steam Conditioning Services for reduction of pressure and temperature of steam. It is a combination of Control Valve
Steam DeSuperheater is used to spray water into steam, so that it gets mixed, resulting in reduction in the temperature at the outlet. Desuperheater can be classified into two:
The CGV Series control valves are suitable for handling steam and water. The valve body is designed for smooth flow profile, which minimizes pressure loss and provides better Cv and rangeability.
PRDS used in turbine bypass applications help to protect the turbine during start-up, power trip and also for part load generation. Turbine by pass valve prevent venting of steam into atmosphere