Critical Technical Advantages
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Balanced Plug Architecture: The ED utilizes a balanced valve plug design, which significantly reduces the actuator force required to move the plug. This allows for the use of smaller, more cost-effective actuators even in high-pressure drop applications.
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Superior Cage Guiding: Rugged cage guiding provides maximum valve plug stability throughout the entire travel range. This mechanical support is essential for reducing vibration, minimizing mechanical noise, and extending the life of the internal components.
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High-Temperature Shutoff: By employing multiple graphite piston rings, the ED can maintain Class IV shutoff at temperatures reaching 593°C (1100°F). For even tighter requirements, the optional C-seal trim enables Class V shutoff at these same extreme temperatures.
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Advanced Emission Control: The valve is compatible with ENVIRO-SEAL™ packing systems, featuring live-loaded PTFE or Graphite ULF. These systems provide a superior stem seal that minimizes the loss of process fluid and reduces routine maintenance requirements.
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Hardened Stainless Steel Trim: Standard hardened stainless steel trim provides exceptional wear resistance against erosion and cavitation, ensuring a longer service life in demanding steam or hydrocarbon service.
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Global Standard Compliance: The ED series is available in dimensions specified by EN/DIN standards and offers optional materials to meet NACE MR0103 and NACE MR0175 / ISO 15156 for sour gas and corrosive environments.
Technical Performance Matrix
| Feature | 세부 정보 |
| Valve Style | Globe or Angle (Single Port) |
| Plug Design | Balanced (Lower actuator thrust required) |
| Guiding | Heavy-Duty Cage Guided |
| Max Temperature | 593°C (1100°F) with Graphite Piston Rings |
| Shutoff Class | Class IV (Standard) or Class V (with C-seal) |
| Flow Passages | Streamlined for High $C_v$ Capacity |
Primary Applications
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Steam and Power Generation: Managing high-pressure steam headers and feedwater systems.
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Hydrocarbon Processing: Versatile control for refinery utility and process lines.
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Chemical Manufacturing: Reliable throttling for non-corrosive and sour gas services.
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General Industrial Utilities: Stable pressure and flow control for air, water, and gas distribution.
