Description
MOOG G772K240A is an ISO Size 03 intrinsically safe two-stage mechanical feedback electro-hydraulic servo valve from MOOG G772K hazardous location series, designed for high-flow, high-precision closed-loop hydraulic regulation in explosive petrochemical, power and metallurgical production zones. This MOOG G772K240A adopts dry polarized torque motor and dual nozzle-flapper pilot stage, accepts standard 40mA analog control current to drive large hydraulic actuators, with ultra-low hysteresis and excellent zero drift stability. As an ATEX/IECEx certified heavy-duty hydraulic control spare part of MOOG industrial servo solutions, G772K240A supports 38 L/min rated flow under standard pressure drop, delivers fast dynamic response and long service life, widely applied in gas turbine steam valve positioning, steel mill AGC thickness control, hazardous area hydraulic test rigs and large precision injection molding equipment.
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Basic Procurement Parameters
- Brand: MOOG
- Model: G772K240A
- Availability: Original factory sealed new stock, fully disassembled, calibrated and bench-tested refurbished valves in stock
- Delivery Time: 1–5 working days for in-stock items; 10–12 weeks for factory backorder shipments
- Guarantee: 12-month full warranty valid from shipment date
- Condition: Brand new unopened OEM / Complete overhauled with zero point calibration and full performance testing
- Series: G772K Intrinsically Safe Servo Valve
- Mounting Standard: ISO 10372 Size 03 standard mounting manifold pattern
- Rated Flow: 38 L/min (10 gpm) at 210 bar single land pressure drop
- Max Continuous Operating Pressure: 210 bar (3000 psi)
- Rated Control Signal: 40mA single coil analog current signal
- 100% Stroke Step Response: 6–12 ms
- Frequency Response (-3dB Bandwidth): 130–190 Hz
- Safety Certification: ATEX Ex ia IIB/IIC T4, IECEx intrinsically safe explosion-proof certification
- Compatible Hydraulic Fluid: Petroleum-based mineral oil, fire-resistant Skydrol fluid
- Recommended Fluid Viscosity: 10–97 cSt @ 38°C
- Required Fluid Cleanliness Grade: ISO 4406 17/14/11 or higher cleanliness
- Operating Temperature Range: -29°C ~ +135°C ambient & fluid temperature
- Seal Material: Fluorocarbon FKM high temperature resistant seals
- Net Weight: 3.0 kg
- Control Structure: Two-stage double nozzle-flapper pilot stage with mechanical feedback (MFB)
- Built-in Functions: Field adjustable null bias; failsafe zero spool position when control signal lost
- Hysteresis: Less than 0.5% full scale
Key Features & Advantages
- Intrinsically safe explosion-proof structure with complete ATEX/IECEx certification, safe and compliant for flammable gas, oil and chemical hazardous production workshops
- Large flow capacity ISO Size 03 two-stage amplification design, high spool output force, stable control for heavy-load hydraulic cylinders with micron-level positioning accuracy
- Standard universal ISO 03 mounting interface, direct interchangeable with G772K series equivalent models, no manifold modification required during on-site replacement
Industry Application Scenarios
- Power generation industry: Gas turbine hydraulic actuator precise positioning and load adjustment control systems
- Metallurgical rolling mills: Steel strip AGC automatic thickness control, continuous casting vibration table hydraulic drive systems
- Petrochemical hazardous process plants: Explosion-proof hydraulic test benches, remote servo adjustment for large process valves
- Precision heavy manufacturing: Large injection molding & die casting machine injection pressure and speed closed-loop hydraulic control
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