Aircraft Aggregate Flushing Rig, dual‑pressure ATF cleaning to 25 kgf/cm².

The Aircraft Aggregate Flushing Rig by Neometrix Defence Limited is engineered to perform deep, dynamic internal cleaning of these aggregates. Unlike a simple wash or solvent-based clean, the rig replicates actual operational behaviour — circulating ATF through the aggregate at controlled pressure, temperature and flow while simultaneously driving or actuating the unit — so contaminants are removed from recessed internal cavities that static cleaning methods cannot reach.

Every aggregate, whether new, overhauled, or under qualification, must undergo a rigorous flushing process before being passed as airworthy. The rig supports production acceptance, MRO flushing after disassembly-reassembly cycles, life-extension refurbishment, and failure-investigation diagnostics — making it a primary defence against flow-induced failures, hydraulic instability, and safety hazards.

Its combination of hydraulic, pneumatic, mechanical, and electronic subsystems makes it a cornerstone of any aerospace MRO or production environment — a hydraulic flushing test bench purpose-built for aviation-grade aircraft component cleaning.

Pneumatic Supply Circuit

Supports aggregates requiring air actuation or pressure-assisted internal movement.

• Filter F9 removes moisture and particulates from incoming air.
• Pressure Regulator PRV1 sets the required actuation pressure precisely.
• Ball Valves BV18 & BV19 provide controlled isolation of the air supply.
• Actuates air-operated valves inside aggregates and aids flow-direction changes during dynamic simulation.

Drive & Loading Unit

Rotational aggregates — fuel pumps, hydraulic pumps, scavenge pumps, gear-type equipment — require rotation for proper flushing.

• Drive Motor M4 with adjustable speed knob and mechanical fixtures for secure mounting.
• Integrated sink captures and isolates used ATF during rotation.
• Prevents stagnation zones and enhances detachment of internal debris.
• Helps identify abnormal noises, vibrations, or flow restrictions during test.

Key Quality Activities

• 100% visual inspection for welds, tubing, and assembly alignment
• Material certification for tanks, pipes, and fittings
• Dimensional checks to ensure exact fitment of all assemblies
• Pressure testing for hydraulic lines, tanks, and fittings
• Electrical compliance testing for motors, sensors, and transmitters
• Painting thickness measurement, minimum 100 microns
• Functional testing verifying pumps, motor performance, and flow stability
• Factory Acceptance Test (FAT) validation after assembly
• Site Acceptance Test (SAT), final verification at installation site

Documentation Delivered

• Inspection reports
• Material certificates
• FAT & SAT protocols
• Compliance matrices
• Operating manuals

Performance & Cleaning

• Circulates temperature-controlled ATF through pumps and valves at realistic pressure and flow for deep cleaning.
• Drive motor spins aggregate assemblies during flushing, removing contaminants from internal galleries and passages.
• Multi-stage filtration achieves aerospace cleanliness, verified via NAS and ISO particle count analysis per run.
• Closed-loop ATF recovery with filtration reduces fluid waste while ensuring contamination-free flushing conditions.

Application & Reliability

• Supports production acceptance, overhaul, life-extension refurbishment, and failure diagnostic flushing operations.
• Removes contaminants from servo-valve spool clearances and lubrication galleries that static cleaning cannot reach.
• Prevents flow-induced failure and instability by deep-cleaning every aggregate before flight-clearance release.
• Aerospace-grade stainless wetted components ensure ATF compatibility and contamination-free service reliability.