856A1815G04 is a high-precision aircraft hydraulic flow control valve tester, compliant with AS9100D aerospace standards and FAA AC 43.13-2 regulations, engineered for calibrating flow control valves in Boeing 777 and Airbus A330 hydraulic systems.

Constructed from aerospace-grade aluminum alloy with a hard-anodized finish, it withstands hydraulic fluid temperatures up to 120°C and pressure ratings of 3,000 psi, ensuring stable performance in MRO facilities. Equipped with a digital flow meter (±0.3% accuracy) and adjustable pressure regulators, it measures flow rates from 0.5 to 50 L/min, enabling precise validation of valve responsiveness. Its compact, portable design (3.2 kg) and intuitive touchscreen interface simplify on-site testing, making it essential for technicians to maintain hydraulic system efficiency and comply with aviation safety audits.