Critical Technical Advantages
Advanced Cavitation Abatement: The “C” designation indicates the integration of the Cavitrol III trim. This multi-stage cage design manages the pressure drop across several stages, preventing the fluid pressure from dropping below its vapor pressure. This eliminates the formation of vapor bubbles and the subsequent destructive implosions that cause pitting and vibration.
Balanced Plug for High-Pressure Drops: Like the standard HPT, the HPT-C utilizes a balanced valve plug. By equalizing process pressure across the trim, the valve significantly reduces the actuator thrust required. This allow for smooth, high-precision control even when the valve is subjected to extreme pressure differentials.
Rugged Cage-Guided Stability: In cavitation-prone services, mechanical stability is paramount. The HPT-C features heavy-duty cage guiding that provides continuous support to the valve plug. This prevents lateral movement and reduces mechanical noise, ensuring a long service life even in high-velocity liquid applications.
Spiral-Wound Gasket Integrity: To maintain a secure pressure boundary under severe thermal and mechanical stress, the HPT-C uses premium spiral-wound gaskets. Standard materials include Alloy 600 or X750 with Graphite, providing the resilience needed for high-pressure utility and process service.
Intermediate Pressure/Temperature Ratings: For applications exceeding standard ASME Class 1500 limits, the HPT-C can be supplied with weld-end fittings that carry intermediate ratings per ASME B16.34. This ensures compliance and safety in modern high-energy piping systems.
Top-Entry Quick Change Trim: Despite its sophisticated multi-stage trim, the HPT-C maintains a top-entry design. All internal components can be removed and replaced using common tools without removing the valve body from the pipeline, facilitating efficient maintenance and reduced downtime.
Technical Performance Matrix
| Feature | Details |
| Valve Style | Globe (Single Port) |
| Protection | Cavitrol III (Multi-stage cavitation abatement) |
| Plug Action | Balanced (Reduced actuator requirements) |
| Pressure Class | CL900, CL1500, and Intermediate Ratings |
| Gaskets | Alloy 600/Graphite or Alloy X750/Graphite |
| Guiding | Rugged Cage Guided |
Primary Applications
Boiler Feedwater Control: Managing the high-pressure liquid supply to boilers where cavitation is a constant threat.
High-Pressure Liquid Letdown: Reducing pressure in hydrocarbon liquid streams within refineries and petrochemical plants.
Pump Recirculation: Handling high-pressure bypass flow to protect pumps from low-flow conditions.
Water Injection: Precise control of high-pressure water in upstream oil and gas recovery.
