Core parameters (Δp = 35 bar)

Rated flow rate: 150 L/min (40 gpm)

Working pressure: 420 bar (P/A/B), T ≤ 70 bar (one level higher than 022A) Mug China

Frequency response: −3 dB ≈ 80 Hz Mug China

Step response: 18 ms (0→100%) Mug China

Hysteresis: <4% (MFB)

Linearity: <7.5%

Control signal: ±15 mA / 20 Ω

Feedback: Mechanical feedback MFB, no external amplification required

Sealing: NBR (−29℃～+135℃)

Weight: ≈ 5.5 kg

✅ 023A vs 022A/022B (Key differences)

D072‑023A: 150 L/min, 420 bar → Ultra-high pressure heavy-duty

D072‑022A: 150 L/min, 350 bar → Standard industrial

D072‑022B: 150 L/min, 350 bar, FKM sealing → Low temperature / High vibration

D072‑017: 95 L/min, 350 bar → Smaller main unit

Structural features (common to the series)

Two-stage pilot + double nozzle baffle: Strong anti-pollution, long lifespan

Dry torque motor: Oil-free lubrication, friendly to harsh working conditions

Mechanical feedback MFB: Direct current drive, simple debugging

Can replace pilot filter on site: Low maintenance cost

ISO10372 Size 06 installation surface: Fully interchangeable with 022A/022B/017

Typical applications (exclusive scenarios for 023A)

Metallurgy: High-pressure rolling mills, ultra-thin strip steel, 420 bar press cylinder

Forging: 10,000 ton heavy press machine, ultra-high pressure locking / ejection

Material testing: Ultra-high pressure fatigue testing machine, high-pressure vessel control

Naval / Military: High-pressure hydraulic system, 420 bar heavy-duty actuator