Moog G761‑3033B Servo Valve

Moog G761‑3033B servo valve
Moog G761‑3033B Servo Valve - Image 2
Moog G761‑3033B Servo Valve - Image 3
Moog G761‑3033B Servo Valve - Image 4
Moog G761‑3033B Servo Valve - Image 5

Description:

The Moog G761‑3033B servo valve is a high-performance, two‑stage flow control valve designed for precision control in demanding industrial hydraulic systems. It employs a nozzle‑flapper pilot stage combined with a four-land sliding spool and mechanical feedback for exceptional dynamic response, stability, and repeatability. The G761 series is widely used in applications requiring fast, accurate control of flow, pressure, or force — such as robotics, test stands, aerospace systems, and industrial motion control.

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Advantages of the Moog G761‑3033B Servo Valve

  1. High Dynamic Performance
    Thanks to the two-stage design (pilot + main spool), the G761‑3033B offers rapid step response (< 4 to < 16 ms depending on variant).

  2. Exceptional Accuracy & Resolution
    The mechanical feedback system uses a carbide ball-on-wire (“ball-in-hole”) design, ensuring high accuracy, low hysteresis, and long life.

  3. Robust Construction
    Available in durable cast-iron or aluminum bodies, the valve supports high pressure (up to 315 bar for aluminum, 350 bar for steel) for demanding environments.

  4. Wide Flow Range
    Rated flow spans from approximately 4 to 63 L/min (1 to 16.5 gpm) at a nominal pressure drop, accommodating a broad set of hydraulic applications.

  5. Compact and Versatile Mounting
    The valve follows the ISO 10372-04-04-0-92 mounting pattern, enabling easy integration in compact hydraulic systems.

  6. Long Service Life
    The carbide feedback ball and brazed construction significantly extend operational life under high load and temp conditions.

  7. Safety Variants Available
    Intrinsically safe and explosion-proof versions (G761K, etc.) exist for hazardous environments.

Parameter Specification
Valve Type 2‑stage flow control servo valve (mechanical feedback)
Pilot Stage Nozzle-flapper torque motor
Main Stage Four-land sliding spool
Mounting Pattern ISO 10372‑04‑04‑0‑92
Rated Flow ~4 – 63 L/min (1 – 16.5 gpm) @ Δp = 35 bar/spool land
Maximum Operating Pressure – Ports P/A/B/X: Aluminum body = 315 bar; Steel body = 350 bar  – Port T (return): 210 bar (per catalog)
Step Response Time (0‑100% stroke) < 4 ms (very high response) to < 16 ms (standard) depending on variant.
Rated Input Signal 8 – 200 mA (depending on configuration)
Electrical Connector MS3106F14S-2S (or equivalent) per installation manual.
Feedback Mechanism Mechanical feedback via carbide ball-on-wire.
Body Material Cast iron (or aluminum/steel variants)
Weight ~1.0 – 1.7 kg (2.2 – 3.8 lbs) depending on body style.
Mounting Surface Finish ≤ 32 µin; flatness within ±0.03 mm TIR.
Null Adjust Flow adjust can be tuned via null adjust screw.
Optional Safety Features Intrinsically safe versions (G761K) certified per FM, ATEX, IECEx, etc.