Model Code DefinitionD662 = NG16 ISO4401-07 mounting dimension, ServoJet jet-pipe pilot structure, integrated internal electronic amplifier base series

Z1912 = Factory customized flow trim, spool null calibration, internal pilot component modification batch code

E = Seal specification & customized internal drain layout revision markTechnical SpecificationsHydraulic ParametersRated Flow: 212 L/min @35bar single metering land differential pressure; max 385 L/min under 70bar supply pressure difference

Max Working Pressure: P/A/B main control ports 350bar; internal T drain ≤50bar; standalone Y external drain up to 350bar

Dynamic Response: Full 0~100% stroke step response ≤28.5ms at 210bar supply pressure

Control Accuracy: Hysteresis＜0.20%FS, Resolution＜0.09%FS, full temperature drift (-20℃~+55℃)＜2.40%FS

Null Leakage: 0.62~3.42 L/min

Working Medium: Anti-wear mineral hydraulic oil, cleanliness NAS6~7 / ISO4406 17/14/11, fluid operating temperature -20℃~+80℃

Net Weight: 3.78kgElectrical ParametersPower Supply: 24VDC wide input range (18~32VDC), static working current ≤692mA

Standard Command Signal: ±10VDC differential analog input; optional ±10mA /4~20mA current signal available on special orderMoog Inc.

EMC Compliance: Conforms to EN55011 industrial EMC standard; military circular electrical connector IP65 protection gradePort & Connection ConfigurationHydraulic Interface: Standard ISO4401-07 NG16 mounting hole layout; P supply port, built-in internal T drain, A/B actuator control ports, independent Y external drain portMoog Inc.

Electrical Interface: Standard 7-pin military circular receptacle integrating power supply, analog command signal and full-range LVDT feedback wiring; double-shielded control cable with single-point grounding at control cabinet terminal

Control Mode: Pure analog closed-loop regulation, no digital fieldbus communication interfaceCore Functions

Patented ServoJet jet-pipe pilot delivers superior anti-pollution performance vs conventional nozzle-flapper pilot, ensuring long-term steady continuous operation under moderately contaminated hydraulic fluid in severe industrial working environments.

Embedded full-spool LVDT closed-loop matching onboard amplifier automatically offsets ambient-temperature-caused null drift, supporting nonstop 24-hour full-load continuous running.

Factory customized center spool with spring reset upon power loss to lock A/B oil cavities and fix load position to satisfy equipment fail-safe protection requirement.

Optimized internal flow passage maintains linear flow gain, enabling flexible switching among position, velocity and pressure closed-loop control modes on single valve body.

Typical ApplicationHot forging hydraulic press, automotive sheet metal stamping line, steel strip mill tension control, hydraulic material fatigue test bench, precision composite hot-forming equipment, large-tonnage injection molding clamping system.Installation & Maintenance Instructions

Mount 3μm high-pressure precision inline filter on upstream supply pipeline; replace initial filter cartridge after 15 working days of equipment commissioning startup.

Separate high-current power wiring and shielded control cable inside independent wiring trunking to avoid inverter harmonic interference against analog control signal.

Null offset and flow gain are pre-calibrated at MOOG factory; only minor on-site potentiometer fine trimming allowed; complete disassembly of ServoJet pilot assembly and main spool is strictly forbidden.

Seal all hydraulic ports with dedicated blocking plugs during long-term spare storage; store within dry dustproof warehouse to prevent rubber seal aging and hydraulic fluid leakage.