MOOG D662Z4815 Servo Valve_Ningde Androld Automation Equipment Co.,Ltd.

June 05, 2026

MOOG D662Z4815 Servo Valve

Product Overview D662Z4815 is a custom-calibrated two-stage ServoJet integrated-amplifier servo valve from MOOG D660 NG16 ISO4401-07 series, equipped with onboard built-in drive electronics and full-stroke LVDT closed-loop spool position feedback without external servo driver. It adopts zero-lap 4-way spool plus dual drain construction: internal T drain + independent external Y drain. Standard electronic configuration without low-temperature upgraded circuit, designed for precision closed-loop position, velocity and pressure control on general heavy-duty hydraulic machinery under regular ambient temperature.

Description

Model Code Definition

D662 = Base series: NG16 ISO4401-07 mounting dimension, ServoJet jet-pipe pilot structure, embedded integrated servo amplifier

Z4815 = Exclusive factory trim code defining fixed rated flow, preset null offset, customized pilot component specification and factory-locked amplifier gain parameters

No suffix = Standard PCB circuit + conventional FKM fluorocarbon sealing for common indoor working environment

Technical Specifications

Hydraulic Parameters

Rated Flow: 240 L/min @35bar single-land differential pressure; maximum instantaneous flow 385 L/min @70bar supply differential pressure

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

Full Stroke Step Response: ≤25.1ms under standard 210bar supply pressure

Control Precision: Hysteresis＜0.19%FS, Resolution＜0.075%FS, overall thermal drift (0℃~+55℃)＜2.30%FS

Null Leakage: 0.48~3.00 L/min

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

Net Weight: 3.77kg

Electrical Parameters

Power Supply: 24VDC wide input range (18~32VDC), static quiescent current ≤680mA

Standard Command Signal: ±10VDC differential analog input; ±10mA /4~20mA current signal available via special factory order

EMC Compliance: Conforms to EN55011 industrial electromagnetic standard; 7-pin military circular connector with IP65 protection after cable assembly

Port & Connection Configuration

Hydraulic Interface: Standard ISO4401-07 NG16 mounting hole layout, separate P supply port, A/B actuator control ports, built-in T internal drain and standalone Y external drain port

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

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

Core Functions

Patented ServoJet jet-pipe pilot delivers superior anti-contamination performance compared with traditional nozzle-flapper pilot, enabling stable continuous operation under moderately contaminated hydraulic oil in regular workshop environment.
Integrated matched amplifier plus full-range LVDT closed-loop automatically compensates mild null shift caused by normal ambient temperature variation; standard circuit meets conventional industrial steady operation requirements.
Spring-centered mechanical reset design: main spool automatically returns to neutral position upon power failure, cutting off A/B oil circuit to lock actuator position for equipment safety protection.
Optimized internal flow passage keeps linear flow gain, supports flexible switching among position, velocity and pressure three closed-loop control modes.

Typical Application

Medium hot forging hydraulic press, automotive sheet stamping production line, conventional steel strip mill tension control system, standard hydraulic fatigue test bench, regular composite hot-forming equipment, medium injection molding clamping hydraulic system.

Installation & Maintenance Instructions

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

Model Code Definition

D662 = Base series: NG16 ISO4401-07 mounting dimension, ServoJet jet-pipe pilot structure, embedded integrated servo amplifierZ4815 = Exclusive factory trim code defining fixed rated flow, preset null offset, customized pilot component specification and factory-locked amplifier gain parametersNo suffix = Standard PCB circuit + conventional FKM fluorocarbon sealing for common indoor working environment

Technical Specifications

Hydraulic Parameters

Rated Flow: 240 L/min @35bar single-land differential pressure; maximum instantaneous flow 385 L/min @70bar supply differential pressureMax Working Pressure: P/A/B main control ports 350bar; internal T drain ≤50bar; standalone Y external drain withstand full 350bar pressureFull Stroke Step Response: ≤25.1ms under standard 210bar supply pressureControl Precision: Hysteresis＜0.19%FS, Resolution＜0.075%FS, overall thermal drift (0℃~+55℃)＜2.30%FSNull Leakage: 0.48~3.00 L/minWorking Medium: Anti-wear mineral hydraulic oil, fluid cleanliness NAS6~7 / ISO4406 17/14/11, operating fluid temperature -20℃~+80℃Net Weight: 3.77kg

Electrical Parameters

Power Supply: 24VDC wide input range (18~32VDC), static quiescent current ≤680mAStandard Command Signal: ±10VDC differential analog input; ±10mA /4~20mA current signal available via special factory orderEMC Compliance: Conforms to EN55011 industrial electromagnetic standard; 7-pin military circular connector with IP65 protection after cable assembly

Port & Connection Configuration

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

Core Functions

Patented ServoJet jet-pipe pilot delivers superior anti-contamination performance compared with traditional nozzle-flapper pilot, enabling stable continuous operation under moderately contaminated hydraulic oil in regular workshop environment.
Integrated matched amplifier plus full-range LVDT closed-loop automatically compensates mild null shift caused by normal ambient temperature variation; standard circuit meets conventional industrial steady operation requirements.
Spring-centered mechanical reset design: main spool automatically returns to neutral position upon power failure, cutting off A/B oil circuit to lock actuator position for equipment safety protection.
Optimized internal flow passage keeps linear flow gain, supports flexible switching among position, velocity and pressure three closed-loop control modes.

Typical Application

Installation & Maintenance Instructions

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

Model Code Definition

Technical Specifications

Hydraulic Parameters

Electrical Parameters

Port & Connection Configuration

Core Functions

Patented ServoJet jet-pipe pilot delivers superior anti-contamination performance compared with traditional nozzle-flapper pilot, enabling stable continuous operation under moderately contaminated hydraulic oil in regular workshop environment.
Integrated matched amplifier plus full-range LVDT closed-loop automatically compensates mild null shift caused by normal ambient temperature variation; standard circuit meets conventional industrial steady operation requirements.
Spring-centered mechanical reset design: main spool automatically returns to neutral position upon power failure, cutting off A/B oil circuit to lock actuator position for equipment safety protection.
Optimized internal flow passage keeps linear flow gain, supports flexible switching among position, velocity and pressure three closed-loop control modes.

Typical Application

Installation & Maintenance Instructions

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

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