Direct acting PRDS systems operate by directly reducing steam pressure using a pressure-reducing valve (PRV) and simultaneously desuperheating the steam to a desired temperature. These systems are simple in design and suitable for applications where precise control of steam parameters is not critical.

Pilot operated PRDS systems use a combination of a pilot valve and a main valve to regulate steam pressure and temperature. The pilot valve senses changes in downstream pressure and sends signals to the main valve to adjust accordingly, ensuring precise control over steam parameters even under varying operating conditions.

Combined PRDS systems integrate both direct acting and pilot operated features to provide enhanced control over steam pressure and temperature. These systems offer flexibility and reliability, allowing for efficient operation across a wide range of steam loads and conditions.

Self-contained PRDS systems incorporate all necessary components, including pressure-reducing valves, desuperheaters, and control systems, into a single unit for easy installation and operation. These systems are compact and cost-effective, making them ideal for smaller-scale applications or retrofitting existing steam systems.

Integrated PRDS systems are custom-engineered solutions that integrate PRDS functionality with other steam conditioning equipment, such as steam turbines or boilers, to optimize overall system performance and efficiency. These systems are designed to meet specific process requirements and can be tailored to suit a wide range of industrial applications.