Core Functions

1. Electro‑hydraulic servo proportional control: converts 4‑20 mA / 0‑200 mA electrical signal to rotary mechanical output, closed‑loop position feedback.

2. Hydraulic power‑assisted driving, large output torque, suitable for heavy‑load fuel rack adjustment of large‑power engines.

3. Built‑in fuel adjustment dial, manual fuel fine‑tuning for on‑site calibration.

4. Fail‑safe design: returns to minimum fuel position on power/hydraulic failure, ensuring equipment safety.

5. Perfect compatibility with Woodward analog/digital speed governors, stable operation under severe vibration and high‑temperature conditions.

Technical Specifications

Electrical Parameters

• Control Signal Input: 4‑20 mA DC / 0‑200 mA DC

• Power Supply: 24 VDC (18–32 VDC wide range)

• Coil Type: Single‑coil torque motor

Hydraulic Parameters

• Supply Oil Pressure: 1.4–2.1 MPa (200–300 psi)

• Output Shaft Rotation Angle: Standard rotary stroke

• Output Torque: Heavy‑duty high‑torque design

Environmental & Mechanical

• Operating Temperature: −40 °C ~ +85 °C

• Mounting: Standard base/flange mounting (4‑hole fixed structure)

• Enclosure: Cast iron heavy‑duty housing, shock‑resistant, vibration‑proof, oil‑proof

• Weight: Approx. 12 kg

• Certifications: Class 1 Div 2 hazardous area compliant, marine‑grade vibration resistance

Typical Applications

• Speed‑governing actuator for large‑power diesel/gas engine generator sets

• Marine main engine propulsion speed control system

• Oil‑gas field compressor unit engine fuel regulation

• Industrial heavy‑duty prime mover and turbine governing control