G771K200A | H19FOFA4V14 | High-Performance Servo Valve

Description

Technical Specifications

Product Model | G771K200A H19FOFA4V14
Manufacturer | MOOG
Product Type | High-Performance Servo Valve
Operating Pressure | 150-300 bar
Flow Capacity | 200 L/min @ 70 bar ΔP
Response Time | ≤12 ms (90% step response)
Input Signal | ±10V DC / 4-20mA (Configurable)
Hysteresis | <0.2% Full Scale
Null Leakage | <0.6% Rated Flow
Temperature Range | -20°C to +100°C
Sealing Material | HNBR (Hydrogenated Nitrile)
Certifications | ISO 4401, CETOP RP121H
Warranty | 3-Year Performance Guarantee
Minimum Order Quantity | 1 Unit

Key Features and Advantages

The G771K200A H19FOFA4V14 combines precision and durability with MOOG’s Direct Drive technology, delivering 50% faster response than traditional two-stage valves. Its asymmetrical spool design achieves 0.05% repeatability for applications requiring moderate flow control, such as hydraulic presses. Enhanced contamination resilience (ISO 18/15/12) ensures stable operation in industrial environments with minimal filtration. The valve’s integrated pressure feedback enables real-time load compensation, maintaining ±1% force accuracy under variable conditions.

Energy-efficient design: Low-power coil configuration reduces heat generation by 25% during continuous operation. The H19FOFA4V14 variant features HNBR seals for compatibility with biodegradable hydraulic fluids, making it ideal for environmentally sensitive applications. Optional CANopen interface simplifies integration into modern control architectures.

G772K240A

Application Areas

In mobile hydraulic systems, the G771K200A H19FOFA4V14 controls crane boom movements with 5mm positioning accuracy under dynamic loads. Rubber molding machines utilize its pressure-compensated flow control for consistent product density. Agricultural equipment benefits from the valve’s compatibility with vegetable-based oils in harvesters and tractors.

Paper mill applications deploy this valve for precision roll gap adjustment, achieving 0.02mm thickness consistency. The HNBR sealing package withstands steam-cleaning processes in food-grade hydraulic systems. Test benches for automotive components leverage its fast response for shock absorption simulations.

Related Products

G771K150A H19FOFA4V12: Lower flow variant (150 L/min)
D631 Servo Controller: Compact drive electronics with auto-tuning
FK30 Filter Kit: Medium-pressure filtration system
G773H220B: High-cycle version for stamping presses
VP30-8: Proportional valve for pressure relief
MTC-1 Test Console: Basic diagnostic unit for field service

Installation and Maintenance

Installation preparation: Achieve ISO 17/14/11 cleanliness before installing the G771K200A H19FOFA4V14. Use calibrated torque wrenches (30-35 Nm) for port connections to prevent thread damage. Ensure mounting surface flatness within 0.1mm/m to avoid mechanical binding.

Maintenance recommendations: Replace inlet filters every 1,500 operational hours. Perform spool null adjustment biannually using MOOG ValveTune software. Monitor coil resistance monthly (±10% of nominal indicates wear). For bio-fluid systems, conduct seal integrity tests annually using MOOG FluidCheck kits.

Product Assurance

Every G771K200A H19FOFA4V14 undergoes 400-hour endurance testing including 500,000 full-stroke cycles. MOOG’s Global Support Network offers 24/7 troubleshooting with 72-hour emergency replacement for critical failures. The 3-year warranty covers all mechanical components, extendable to 5 years with certified fluid analysis programs. Lifetime access to MOOG Workbench software includes performance trending and predictive maintenance scheduling.

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