D661: Product series with integrated electronics, 24 VDC power supply and NG10 installation standard4732: Spool and sleeve assembly, rated flow 120 L/min at 35 bar pressure dropP80FAA: Configuration segmentP80: High frequency response version with dedicated internal structureFAA: Standard hydraulic layout and base assembly04NEM2: Electrical and sealing configuration04: 4-pin industrial electrical connectorNE: Special low-friction sealing set for extended service lifeM2: Optimized coil and circuit module0: Standard performance version without extra modification

Rated flow: 120 L/min (ΔP=35 bar)Maximum operating pressure: 350 bar for port P, A and B; 210 bar for internal drain port T, 350 bar for external drain port TStep response: 7–9 ms (0 to 100% stroke at 210 bar)Hysteresis: Less than 0.2%Resolution: Less than 0.1%Temperature drift: Less than 1.5% (ΔT=55 K)Null leakage: Less than 14 mL/minRecommended fluid cleanliness: NAS 1638 Class 6 or ISO 4406 18/15

Power supply: 24 VDC (18–32 VDC)Control signal: ±10 V or ±10 mA analog signalFeedback signal: 4–20 mA from LVDT spool position sensorElectrical connector: 4-pin connectorWorking current: Maximum 580 mA

Operating temperature: -40 ℃ to +85 ℃Weight: Approximately 9.2 kg

Hydraulic interface: Four ports P, A, B, T complying with ISO 4401-05 standardElectrical interface: Terminals for 24 VDC power, GND and PE; terminals for ±10 V/±10 mA command signal; 4-20 mA position feedback terminals and fault status output terminals

ServoJet® pilot stage delivers strong anti-pollution capability, low null drift and long operating lifeIntegrated high-response amplifier features PID regulation, dead zone compensation and overload protectionLVDT closed-loop position feedback ensures excellent linearity and positioning accuracy throughout full strokeStable high frequency response meets the demands of fast dynamic controlRobust sealing and circuit design enhance reliability under continuous operation

Metallurgical industry: Medium-flow AGC roll gap control and tension control systemsTesting equipment: Dynamic material testing machines and high-frequency vibration tablesIndustrial automation: Large precision machine tools, hydraulic presses and injection molding equipmentEnergy and heavy industry: Wind turbine pitch control, shield machine auxiliary control and marine hydraulic systems

Mount the valve horizontally or vertically and keep away from intense vibrationUse qualified hydraulic oil and maintain fluid cleanliness above NAS 1638 Class 6Supply 24 VDC power and connect control signal during commissioning, then complete zero adjustment and gain calibration according to 4-20 mA feedback signalCheck hydraulic fluid contamination regularly. Calibrate null position and gain every six months. Avoid long-term high-pressure standby without control command.