J761-004A | MOOG | Electrohydraulic Servo Valve

Description

The MOOG J761-004A is a two-stage, pilot-operated electrohydraulic servo valve from the 761 Series, engineered for high-precision flow control in industrial automation and aerospace systems. It uses a nozzle-flapper pilot stage and a four-land sliding spool to deliver fast, accurate hydraulic response. Its rugged design ensures dependable performance in demanding environments.

Specifications

• Model: J761-004A

• Valve Type: Two-stage, 4-way servo valve

• Rated Flow: 0.5 to 75 L/min (0.125 to 19.5 GPM) at 35 bar

• Operating Pressure:

  • Aluminum body: up to 315 bar (4,500 psi)

  • Steel body: up to 350 bar (5,000 psi)

• Pilot Stage: Nozzle-flapper torque motor

• Electrical Signal: 8 to 200 mA (single coil)

• Step Response: <4 to <16 ms

• Mounting Interface: ISO 10372-04-04-0-92

• Hysteresis: ≤3.0%

• Threshold: ≤0.5%

• Null Shift (ΔT=55 K): ≤2.0%

• Flow Symmetry Deviation: ±10%

• Weight: Approx. 1.0 kg

• Body Material: Aluminum or steel options available

Features

• High Dynamic Response: Fast step response for precise motion control

• Nozzle-Flapper Pilot Stage: Ensures stable and accurate hydraulic modulation

• Low Hysteresis & Threshold: Enhances control accuracy and repeatability

• Durable Construction: Designed for long life in harsh industrial settings

• Flexible Mounting: ISO-standard interface for easy integration

• Wide Flow Range: Supports applications from light-duty to high-flow systems

• Temperature Stability: Minimal null shift across temperature variations