MOOG G761-3003B Hydraulic Servo Valve
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Advantages of the Moog G761‑3003B Servo Valve
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High Dynamic Performance: Offers fast step response (typically 5–16 ms) and broad frequency response (120–230 Hz), enabling precise control under dynamic load conditions.
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Robust Mechanical Feedback Design: Utilizes a carbide ball‑in‑hole feedback wire for high accuracy, low hysteresis, and long service life.
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Durable Construction: Hardened 440C spool and bushing provide wear resistance and long operational life.
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Fail‑Safe & Service Options: External null bias adjustment, emergency fail-safe positioning, and field-replaceable pilot-stage filter enhance serviceability and reliability.
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Flexible Pressure Range: Available in aluminum body up to ~315 bar or steel variants up to ~350 bar, suitable for high-pressure systems.
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Field Configurability: Includes optional fifth port for separate pilot supply, enabling advanced system designs.
| Parameter | Specification |
|---|---|
| Type | Electro-hydraulic servo valve (flow control) |
| Series | Moog G761 series |
| Stages | 2‑stage (pilot + main spool) |
| Rated Flow Range | 0.5 to 75 L/min (0.125 to ~20 gpm) depending on configuration |
| Standard Flow Options | 4, 10, 19, 38, 63 L/min |
| Max Operating Pressure | ~315 bar for aluminum body, ~350 bar for steel body |
| Step Response (0–100% stroke) | ~5–16 ms (depending on response version) |
| Frequency Response | ~120–230 Hz typical |
| Rated Electrical Signal | 8–200 mA (common config: 15, 40, 200 mA) |
| Feedback Mechanism | Carbide ball-in-hole mechanical feedback |
| Mounting Pattern | ISO 10372-04-04-0-92 (Size 04) |
| Weight | ≈ 1.08 kg (2.4 lbs) |
| Null Adjust | External null-bias adjustment available |
| Electrical Connector | Mates with MS3106F14S‑2S (or equivalent) per installation sheet |
| Fluid Medium | Hydraulic oil (cleanliness critical) |
| Special Features | Field-replaceable pilot filter, optional pilot supply port (5th port), rugged and long-life design |