Core parameters (Δp = 35 bar)

Rated flow rate: 60 L/min

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

Frequency response: −3 dB ≈ 220 Hz

Hysteresis: <0.5% (closed loop, far superior to open loop)

Zero drift: <0.5%/40°C

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

Control signal: ±10 V or 4–20 mA

Feedback: LVDT valve core position closed loop (4–20 mA or 2–10 V output) Mug China

Sealing: NBR (−29℃～+135℃)

Protection: IP65

Weight: Approximately 2.2 kg

Key differences compared to previous models (814A/823C/8310)

8312: 6 cores + PE, with LVDT closed loop, high precision, low hysteresis

8310: 4 cores, open loop without feedback, standard type

823C: 4 cores + PE, open loop, enhanced EMC, for strong interference applications

814A: 4 cores, open loop, basic model Structural features

Two-stage servo + ServoJet jet pipe pilot: Anti-pollution, long service life, Moog Inc.

Integrated 24V drive + LVDT closed-loop: No need for external amplifier, high closed-loop accuracy

NG05 small size + 60 L/min large flow rate: Compact system with high power density

Typical applications

Injection molding / die casting: Closed-loop flow / pressure control (high precision requirements)

Metallurgy: Rolling mill tension control, sheet thickness control

Material testing: Fatigue test, static loading (high repeatability)

Precision machine tools, robots: Electro-hydraulic position / speed closed-loop