Description
Woodward R8520-0028
Technical Specifications:
- Brand: Woodward
- Model: R8520-0028
- Product Type: Regulation Control Valve
Functional Features:
- Accurate Flow Regulation: Precision-ground spool and body provide extremely high flow resolution and linearity.
- Fast Dynamic Response: Rapidly responds to electrical or hydraulic pilot signals from the governor, achieving millisecond-level valve opening adjustments.
Application Scenarios:
Widely used in steam turbine admission control, gas turbine fuel metering, and industrial compressor anti-surge control.
Performance Parameters:
- Control Accuracy: Minimal hysteresis and deadband ensure highly repeatable flow output.
- Pressure Rating: Body and seals are designed to withstand continuous impacts in high-pressure industrial fluid systems.
Material Composition:
Valve body is forged from high-strength stainless or alloy steel; internal spool is made of wear-resistant and anti-corrosion special alloys.
Structural Characteristics:
Compact integrated design with built-in return springs and position feedback sensor interfaces, featuring standard hydraulic/pneumatic ports and electrical plugs.
Working Principle:
Receives control signals to alter electromagnetic force or pilot hydraulic pressure, pushing the spool to precise displacements within the body, changing the flow channel area for closed-loop flow or pressure regulation.
Installation Requirements:
Thoroughly flush pipelines before installation to prevent welding slag from jamming the spool. Use appropriate seals and tighten to specified torque.
Usage Precautions:
Regularly monitor valve response time and full-stroke time. If control instability or leakage occurs, promptly inspect internal seals and spool wear.
