Model Code Definition

D662 = NG16 ISO4401-07 mounting size, ServoJet jet pipe pilot structure, internal integrated electronic amplifier base series

Z4017 = Factory exclusive customized trim code including rated flow setting, neutral null pre-bias, internal pilot part modification and factory fixed gain calibration parameter

No suffix letter = Standard FKM fluororubber sealing configuration, regular standard drain channel design

Technical Specifications

Hydraulic Parameters

Rated Flow: 222 L/min @35bar single land differential pressure; maximum 396 L/min under 70bar supply differential pressure

Max Working Pressure: P/A/B main ports 350bar; built-in internal T drain ≤50bar; standalone Y external drain up to 350barMoog Inc.

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

Control Accuracy: Hysteresis＜0.20%FS, Resolution＜0.08%FS, full temperature drift (-20℃~+55℃)＜2.30%FS

Null Leakage: 0.55~3.22 L/min

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

Net Weight: 3.78kg

Electrical Parameters

Power Supply: 24VDC wide input (18~32VDC), static operating current ≤690mA

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

EMC Compliance: Meet EN55011 industrial EMC standard; military circular electrical connector with IP65 protection after cable assembly

Port & Connection Configuration

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

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

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

Core Functions

Patented ServoJet jet pipe pilot owns outstanding anti-pollution capacity versus traditional nozzle-flapper pilot, stable continuous operation under medium contaminated hydraulic oil in harsh industrial working conditions。

Built-in full-spool LVDT closed loop matches onboard amplifier to automatically compensate ambient-temperature induced neutral drift, support 24h nonstop full-load continuous operation。

Factory preset spring centering fail-safe spool: spool returns to neutral automatically upon power failure to lock A/B oil chamber and fix load position for equipment safety protection。

Optimized internal runner ensures stable linear flow gain, freely switchable among position, speed and pressure closed-loop control on single valve body。

Typical Application

Medium tonnage hot forging hydraulic press, auto sheet stamping production line, medium-width strip steel mill tension control, hydraulic fatigue test bench, composite hot pressing forming machine, large precision injection molding clamping control 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-power power cable and shielded control wire inside different wiring grooves to avoid inverter harmonic interference to analog control signal。

Null offset and flow gain are fully pre-calibrated at MOOG factory; only tiny on-site potentiometer fine adjustment allowed; complete disassembly of ServoJet pilot set and main spool is strictly forbidden。

Seal all hydraulic ports with dedicated blocking plugs during long-term spare storage; store inside dry dustproof warehouse to prevent FKM seal aging and oil leakage。