Product Details

MOOG A58948-001 is a custom two-stage mechanical feedback electro-hydraulic servo valve, designed to meet strict precision closed-loop hydraulic control requirements for industrial test rigs and aerospace equipment. This moog servo valve adopts polarized torque motor and dual-nozzle flapper pilot stage structure, delivering fast dynamic response, ultra-low hysteresis and stable repeatability for long-term continuous cyclic loading operations. It relies on mechanical spool feedback to maintain steady hydraulic flow output without electronic spool position feedback, and can sustain reliable control performance under mechanical vibration and ambient temperature fluctuations in demanding industrial environments. A field-replaceable first-stage filter is integrated within the valve body to capture solid particulate contaminants in hydraulic fluid, protect the finely machined internal valve components and reduce maintenance frequency and unexpected system downtime. It accepts analog current command signals, drives the torque motor to adjust spool opening and converts electrical command signals into proportional hydraulic flow output, so as to precisely control the displacement, speed and loading force of hydraulic actuators. The valve body is precision machined from high-strength alloy steel with anti-corrosion surface treatment, compatible with mineral oil and fire-resistant hydraulic fluid. This custom electro-hydraulic valve supports 3-way and 4-way hydraulic circuit layout, widely used in material fatigue test benches, aerospace structural loading test systems, heavy-duty automotive component durability test equipment and multi-channel hydraulic simulation platforms. It can cooperate with MOOG digital servo controllers to build complete multi-axis synchronous electro-hydraulic closed-loop control systems for heavy industrial loading projects.

Brand: MOOG

Model: A58948-001

Product Type: Custom Two-stage Mechanical Feedback Electro-hydraulic Servo Valve

Structure: Polarized torque motor, dual-nozzle flapper pilot stage

Feedback Type: Mechanical spool feedback

Control Signal: Analog current signal

Max Working Pressure: 350 bar (5000 psi)

Built-in Component: Field replaceable first stage filter

Fluid Medium: Mineral oil, fire-resistant hydraulic fluid

Application: Aerospace loading test,material fatigue test bench,automotive component test