I. Basic Information

Model: A88594-004

Series: 761 / G761 Series (Two-stage, Mechanical Feedback, Nozzle Baffle)

Rated Flow: 10 L/min (ΔP = 70 bar)

Working Pressure: 210 bar (3000 psi)

Coils: Dual coils, ±10 mA standard signal

Installation Interface: Standard S04 (ISO 10372)

Weight: Approximately 1.2 kg

Origin: USA

Status: In production, industrial standard model, stable supply

II. Structure and Features

Two-stage servo valve: Pre-stage (Nozzle Baffle) + Power stage (Slide Valve), with built-in **A67999-100 (10 μm) or A67999-200 (20 μm)** precision filter element (the two models you just checked)

Mechanical Feedback: Slide valve position is rigidly returned through the feedback rod, with small zero drift, low hysteresis (<3%), and good linearity

Symmetrical Four-way: Standard 4-way, used for closed-loop position/velocity/force control

Dry Torque Motor: Anti-pollution, high reliability, suitable for industrial harsh conditions

III. Key Technical Parameters

Rated Flow: 10 L/min @ 70 bar pressure difference

Maximum Pressure: 210 bar

Coil Current: ±10 mA (impedance approximately 800 Ω)

Response Time: <8 ms (0–90% step)

Hysteresis: ≤3%

Zero Drift: ≤±1% (rated current)

Operating Temperature: -20℃ ～ +60℃

Medium: ISO VG 32/46/68 hydraulic oil, anti-fuel oil

Filter Requirements: System oil NAS 6 grade or better

IV. Typical Applications

Material Testing Machines (Tensile / Compressive / Fatigue)

Steel: Continuous Casting Mold Vibration, Rolling Mill Thickness Control

Die Casting Machines, Injection Molding Machines Closed-loop Control

Aircraft Ground Simulation, Vibration Table

Wind Power, Power Generation Equipment Servo Control