Model Interpretation

D662: NG16 standard installation base, ServoJet jet pipe pilot, valve-integrated drive circuit series

4099: Flow encoding, unilateral throttling pressure difference ΔP = 35 bar, rated flow 1060 L/min, flow higher than 4087 (980 L/min); internal control T return oil + Y independent external oil outlet; standard configuration suffix D02HABF6VSX2, O-type neutral function, NBR nitrile seal, ±10V differential voltage command, 7-core circular aviation plug, full stroke LVDT valve core position feedback. Technical Specifications

Hydraulic parameters

Rated flow rate: 1060L/min (single throttle port with 35bar pressure difference); 70bar pressure difference limit flow ≈ 1990L/min

Pressure resistance: Maximum P/A/B main oil circuit 350bar; Internal control T return oil working pressure ≤ 50bar; External leakage Y port withstands 350bar pressure

Dynamic response: Supply pressure 210bar, 100% full stroke step response < 27ms

Control accuracy: Hysteresis < 0.2% FS, resolution < 0.1% FS, -20~55℃ full temperature zero drift < 2.3% FS

Zero position leakage: 0.65~3.4L/min

Applicable media: Mineral hydraulic oil, oil cleanliness NAS6~7 grade, oil temperature -20℃~+80℃

Overall machine net weight: 3.61kg

Electrical parameters

Power supply: DC24V (18~32VDC wide voltage), static power consumption ≤ 630mA

Standard instructions: ±10VDC differential voltage, optional ±10mA, 4~20mA current signal

Electromagnetic standard: EN55011 industrial EMC certification by Moog Inc.

Interface and communication configuration

Hydraulic interface: ISO4401-07 NG16 standard installation holes, P inlet, T internal control return oil, A/B load oil ports, Y independent external leakage oil ports

Electrical interface: 7-pin circular aviation socket, integrated power supply, control signal, LVDT feedback wiring, control line double-layer shielding, control cabinet single-point grounding

Control mode: Pure analog closed-loop control, no fieldbus interface by Moog Inc. Core function

1. ServoJet jet tube pilot, resistant to impurities better than nozzle baffle. Low failure rate in metallurgical and die-casting harsh oil conditions.

2. Built-in LVDT valve core closed-loop, onboard circuit automatically compensates for zero drift in high and low temperatures, supports 24-hour continuous full-load operation.

3. D02 standard equipped with O-type neutral position, power-off spring returns to neutral to lock A/B oil ports, cylinder maintains pressure lock, meeting equipment fault safety standards.

4. Ultra-large flow + linear flow characteristics, single valve can achieve seamless switching of position, speed, and pressure multi-closed loops. Applicable scenarios

Hot rolling AGC press-down system for wide plates, multi-directional forging machine for 10,000-ton capacity, high-speed injection press for large horizontal cold chamber casting, large-scale high-power hydraulic test platform for ships, giant composite material hot pressing forming equipment, heavy-duty multi-channel hydraulic fatigue loading test machine.

Operation and maintenance instructions

1. Install a 3μm high-pressure precision filter at the oil inlet end. For new machines, replace the first set of filter elements within 15 working days.

2. Separate the power cable and the shielded control line for wiring, avoiding interference from the harmonics of the frequency converter to the analog signals.

3. Zero point and gain are calibrated by the original factory. On-site, only minor electrical fine-tuning is allowed. Do not disassemble the jet pipe and the main valve core assembly.

4. Fully seal and block all P/T/A/B/Y oil ports for long-term storage. Store in a dry warehouse to delay the aging and leakage of the seals.