D662 = Base series, NG16 ISO4401-07 mounting dimension, ServoJet jet-pipe pilot structure, integrated built-in amplifier without external driver neededZ4341 = Custom factory trim code, defines fixed rated flow, factory-set null offset, locked gain parameter and matched pilot component specificationK = Low-temperature upgraded revision, optimized internal oil passage plus temperature compensation circuit to reduce null drift under large ambient temperature fluctuation

Rated Flow:250 L/min @35bar single-land differential pressure; maximum instantaneous flow 405 L/min @70bar supply differential pressureMax Working Pressure:P/A/B main control ports 350bar; internal T drain ≤50bar; separate Y external drain withstand full 350barFull Stroke Step Response:≤24.5ms under standard 210bar supply pressureControl Precision:Hysteresis＜0.18%FS, Resolution＜0.07%FS, overall thermal drift (-20℃~+55℃)＜2.2%FSNull Leakage:0.48~3.0 L/minWorking Medium:Mineral anti-wear hydraulic oil, cleanliness NAS6~7 / ISO4406 17/14/11, operating fluid temperature -20℃~+80℃Net Weight:3.78kg

Input Power:24VDC wide input range (18~32VDC), static standby current ≤680mAStandard Command Signal:±10VDC differential analog input; ±10mA /4~20mA current signal available via factory customized optionEMC Compliance:EN55011 industrial electromagnetic standard, standard 7-pin military circular connector with IP65 protection after full cable installationMoog Inc.

Hydraulic Interface:Standard ISO4401-07 NG16 mounting hole layout, independent P supply, A/B actuator control, built-in T drain and external Y drain portsElectrical Interface:7-pin military circular receptacle integrating power supply, analog command signal and full-stroke LVDT feedback wiring; double-shielded control cable with single-point grounding on control cabinetControl Mode:Pure analog closed-loop regulation, no fieldbus digital communication interface

1.Patented ServoJet jet-pipe pilot features outstanding contamination resistance compared with conventional nozzle-flapper pilot, ensuring steady continuous operation under moderately polluted hydraulic oil in severe workshop working conditions.2.Integrated amplifier matches full-travel LVDT closed-loop feedback to automatically compensate temperature-caused null shift; K-type optimized circuit effectively improves operational stability during drastic ambient temperature variation.3.Spring-centered mechanical centering structure:main spool returns to neutral position automatically once power failure occurs, blocking A/B oil channel to lock load position for equipment safety protection.4.Optimized internal flow channel keeps linear flow gain, supports flexible switching among position, velocity and pressure three closed-loop control modes.

Medium tonnage hot forging press, automotive sheet metal stamping line, metal strip tension control mill, hydraulic fatigue test bench, composite material thermoforming equipment, medium-size die-casting clamping hydraulic system.

1.Install 3μm high-pressure precision inline filter on upstream supply pipeline; replace initial filter cartridge after 15 working days of equipment commissioning.2.Arrange power cable and shielded control wire inside separated wiring ducts to avoid frequency converter harmonic interference to analog command signal.3.Null bias and flow gain are pre-calibrated at MOOG original factory; only minor potentiometer fine adjustment is permitted on site; complete disassembly of ServoJet pilot assembly and main spool is strictly prohibited.4.Seal all unused hydraulic ports with dedicated blank plugs during spare part storage; preserve in dry dustproof warehouse to prevent seal ageing and oil leakage.