Core parameters (Δp = 35 bar)

Rated flow rate: 60 L/min

Working pressure: 280 bar continuous / 315 bar peak; Valve body withstands pressure of 350 bar

Frequency response: −3 dB ≈ 180 Hz (standard response)

Hysteresis: < 0.5% (closed-loop, LVDT feedback)

Zero drift: < 0.5%/40°C

Power supply: 24 Vdc (18–32 Vdc), built-in standard amplifier

Control signal: ±10 V or 4–20 mA

Feedback: Closed-loop (built-in LVDT displacement sensor)

Sealing: NBR (−29℃ to +135℃)

Protection: IP65 (standard EMC)

Weight: Approximately 2.3 kg

Key differences from 8411 (open-loop)

8412 (closed-loop): 6 pins + PE, LVDT feedback, hysteresis < 0.5%, zero drift < 0.5%, high precision, strong anti-interference, suitable for closed-loop control

8411 (open-loop): 4 pins, no LVDT, hysteresis < 1.5%, zero drift < 1.0%, low cost, simple debugging, suitable for open-loop control Structural features

Two-stage ServoJet jet pipe pilot: Anti-pollution, Long lifespan

Integrated 24V standard amplifier + LVDT closed-loop feedback: High precision, Good stability

Standard throttling + Universal seal: Suitable for most common industrial hydraulic oils

Typical applications

Injection molding / die casting: High-precision flow / pressure / position control

General machine tools: Electro-hydraulic closed-loop position / speed control

Hydraulic testing machine: High-precision loading, force control / position control

Metallurgical equipment: AGC/APC etc. High-precision control

Industrial automation: Closed-loop system, High precision and stability requirements