Product Description
MOOG 351A7620P0102 (valve part number 743F003A) is a two-stage electro-hydraulic servo valve of MOOG 743 series, 4-way double-acting with 3 coils. It adopts nozzle-flapper pilot stage and mechanical feedback design, fully compliant with GE specification 351A7620. The 3-coil redundant configuration provides coil fault protection, featuring high resolution and low hysteresis with replaceable pilot filter. It accepts analog control current signal to precisely regulate hydraulic flow and direction, driving hydraulic cylinders for closed-loop control of position, speed and force. It is FM intrinsically safe certified, widely used in steam turbine and power plant hydraulic control systems as legacy spare parts.
Specifications
- Customer PN: 351A7620P0102
- Valve Model: 743F003A
- Product Type: Two-stage electro-hydraulic servo valve, 4-way double-acting, 3 coils
- Rated Flow: 25 gpm (95 L/min)
- Rated Operating Pressure: 1600 psi (approx.110 bar), max pressure 210 bar (3000 psi)
- Rated Control Current: -45.0 ~ +51.0 mA (total)
- Recommended Fluid: DTE-24 hydraulic oil
- Operating Principle: Nozzle-flapper pilot stage, spool mechanical feedback
- Certification: FM Intrinsically Safe
- Coil: 3-coil redundant design with coil fault protection
- Mounting: Plate mounting
- Weight: approx.1.81 kg (4.0 lbs)
- Product Status: Legacy spare part for unit maintenance replacement
Applications
- DEH electro-hydraulic control system of thermal / gas turbine, control of turbine valve actuators
- Hydraulic servo closed-loop control in power plants, position regulation of main steam valves and control valves
- Hydraulic actuators for hazardous explosion-proof environment in oil, gas and petrochemical industries
- High-precision force and position control for large industrial test benches and material testing machines
- Retrofit and spare parts replacement for legacy generator hydraulic servo systems
Series Models
743F001A, 743F002A, 743F003A (351A7620P0102), 744F001A, 744F002A, 744F003A
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