Moog D662‑4070 Servo‑Jet Proportional Servo Valve

The Moog D662‑4070 belongs to D660‑series two‑stage pilot‑operated proportional servo valve with integrated on‑board electronics. Adopting ServoJet jet‑pipe pilot stage and built‑in LVDT spool position closed‑loop feedback, it converts analog command signals into precise hydraulic flow output for high‑performance electro‑hydraulic position, velocity and force control in heavy‑duty industrial hydraulic systems.

This ISO4401‑NG16 mounting servo valve supports high operating pressure, offers excellent anti‑contamination performance and fast dynamic response. It accepts ±10V analog control signal and 24VDC power supply, and provides spool position monitoring feedback signal. Widely used as aftermarket spare part for metallurgy, heavy machinery and test‑stand hydraulic system maintenance and retrofit projects.

Main Specifications

• Brand: Moog; Model:D662‑4070; Type:Two‑Stage Servo‑Jet Proportional Servo Valve
• Mounting Standard: ISO4401‑07 (NG16); Max operating pressure:350 bar
• Electrical:24VDC power supply(18‑32VDC), ±10V command input, LVDT spool position feedback
• Function: Electro‑hydraulic flow regulation, closed‑loop spool position control, position/velocity/force servo control, fault diagnostic feedback
• Feature: ServoJet jet‑pipe pilot stage, high anti‑pollution capability, fast dynamic response, integrated drive electronics
• Installation: Surface mounting according to ISO4401 standard, matched hydraulic manifold block
• Operating Environment:‑20℃ ~ +70℃, suitable for industrial hydraulic station environment
• Certifications: CE compliant for industrial automation hydraulic control applications

Core Functions

• Receive analog ±10V control command from upper‑level controller to realize continuous adjustment of hydraulic output flow.
• Built‑in LVDT sensor realizes closed‑loop feedback of main spool actual position, improving control accuracy and repeatability.
• ServoJet jet‑pipe pilot structure provides strong anti‑contamination ability, reducing failure risk caused by hydraulic oil pollution.
• Convert electrical control signal into high‑power hydraulic energy output to drive hydraulic cylinder or hydraulic motor for precise motion control.
• Output spool position monitoring signal for upper system to realize valve status diagnosis and fault alarm.
• Suitable for closed‑loop position, speed and force control of heavy‑duty hydraulic equipment under complex working conditions.

Application Scenarios

• High‑performance electro‑hydraulic servo control component for heavy‑duty industrial hydraulic systems.
• Critical spare‑part for metallurgical rolling equipment, large‑scale hydraulic press and material test‑stand maintenance.
• Retrofit and spare replacement for legacy D662‑4070 servo‑valve hydraulic‑system upgrade projects.
• Hydraulic station debugging, servo‑loop parameter tuning and faulty proportional‑servo‑valve replacement tasks.
• Spare‑parts inventory for hydraulic system integrators and heavy‑industry engineering contractors.
• Global aftermarket spare supply for technical teams maintaining Moog high‑performance hydraulic automation hardware.