Titan Fine-Finish Sprayer Parts · AirCoat
Keep AirCoat Material Flow Clean, Steady, and Ready for Fine-Finish Work
Shop diagram-matched components for the Titan AirCoat Air-Assisted Hopper Assembly, including the hopper cover, fine and coarse filter screens, mini hopper, return tube, return fitting, return-tube assembly, and five-liter hopper assembly. Match the exploded-view item number to the exact Titan part number before ordering.
What the AirCoat Hopper Assembly Contains
The Titan AirCoat 620 Hopper Assembly is the material-supply section that stores coating and delivers it directly to the fluid pump of the AirCoat 620 Air-Assisted Airless Spray System. This compact feed arrangement is suited to applications where operators need controlled material handling, efficient color changes, reduced coating waste, and convenient operation with smaller production quantities.
Unlike a siphon system that draws material from a separate container, the hopper positions the coating supply close to the pump inlet. Gravity assists material movement toward the fluid section, helping the pump prime efficiently and maintain a dependable supply of coating during spraying. The shorter material path can also reduce the amount of coating required to fill and flush the system.
The hopper assembly includes the material container and the supporting connection, sealing, filtering, mounting, and fluid-routing components that transfer coating into the pump. These parts must remain clean, securely fitted, and correctly sealed to prevent air entry, material leakage, restricted flow, contamination, and interruptions in pump operation.
During operation, coating placed in the hopper moves through the outlet and connected fluid passage toward the pump inlet. The pump then pressurizes the material and sends it through the high-pressure filter and fluid regulator before it reaches the spray hose and AirCoat gun. Compressed assist air introduced at the gun improves atomization and spray-pattern control while the hopper maintains the coating supply required by the fluid-delivery system.
A properly maintained AirCoat 620 Hopper Assembly supports reliable priming, steady material flow, easier cleaning, and efficient coating changes. Dried coating, damaged seals, loose connections, blocked passages, or contamination inside the hopper can restrict material delivery and produce symptoms that resemble pump, regulator, filter, or spray-gun problems.
The exploded parts diagram provides a clear reference for identifying each hopper, outlet, sealing, filtering, mounting, and connection component used in the assembly. Matching the diagram callout with the correct Titan part number helps technicians replace the required components while preserving the original material-flow performance and serviceability of the AirCoat 620 Air-Assisted Airless Spray System.
Systems Supported by the Hopper Assembly
- Stores coating material in the mini hopper or complete five-liter hopper assembly.
- Protects material from contamination and spillage through the fitted hopper cover.
- Filters coating material through fine or coarse screens before it enters the pump system.
- Routes excess or returning material through the return tube, fitting, and return-tube assembly.
- Supports steady gravity-assisted material feed for AirCoat fine-finish spraying.
When Contractors Use This Parts Diagram
- Replacing a cracked, damaged, contaminated, or missing hopper or hopper cover.
- Correcting restricted material flow caused by a clogged, torn, or incorrect filter screen.
- Repairing return-side leaks, hardened tubing, loose fittings, or incomplete return plumbing.
- Switching between fine and coarse filtration for different coating-material requirements.
- Identifying exact hopper and return components before servicing an AirCoat material-feed problem.
Common AirCoat Hopper Assembly Symptoms
Use the symptom to narrow the likely storage, filtration, feed, or return-flow area, then inspect connected components before ordering.
High-Value AirCoat Hopper Assembly Parts
These major storage, filtration, and return-flow components represent the most important AirCoat hopper repair areas. Match each product to the correct exploded-view item and Titan part number.
Titan 0279591 Hopper Cover
Seals the material hopper to help prevent contamination, splashing, and material loss during operation or transport.
Titan 0089917 Fine Filter Screen
Fine-mesh hopper screen that removes smaller debris and contaminants before coating material reaches the spray system.
Titan 0088871 Coarse Filter Screen
Coarse-mesh screen designed to capture larger contaminants while supporting flow of heavier coating materials.
Titan 0090283 Mini Hopper
Compact material container used for smaller batches, touch-up work, and frequent coating changes.
Titan 0093865 Return Tube
Routes returning coating material through the AirCoat feed system to support recirculation and flow stability.
Titan 0288144 Hopper Assembly
Complete five-liter material hopper assembly used to restore AirCoat coating storage and gravity-feed capability.
How to Order the Correct AirCoat Hopper Part
Follow this sequence to reduce fitment mistakes and avoid replacing parts that are not responsible for the operating problem.
Record the symptom
Note whether the problem involves restricted feed, contamination, spills, return-flow failure, leakage, or damaged hopper parts.
Verify the configuration
Confirm the Titan AirCoat hopper setup and determine whether the application uses the mini hopper or complete hopper assembly.
Match the callout
Locate the component on the exploded hopper drawing and record its numbered item and exact Titan part number.
Choose the screen
Select the fine or coarse filter screen according to the coating material and the part specified for the application.
Maintenance Practices That Protect the Hopper Assembly
- Clean the hopper and screen before coating residue dries or hardens.
- Inspect fine and coarse screens for tears, distortion, embedded debris, and reduced flow.
- Check the hopper cover for cracks, poor fit, contamination, or missing venting features.
- Inspect the hopper body and outlet for cracks, residue buildup, and damaged mating surfaces.
- Check return tubes for hardening, kinks, abrasion, collapse, and loose connections.
- Inspect the return fitting and return-tube assembly for leakage or dried coating.
- Use the screen type specified for the coating and clean material before filling the hopper.
Build a More Complete AirCoat Hopper Repair
When replacing a screen, inspect the hopper, cover, outlet, return tube, and coating condition. When replacing a return tube or return-tube assembly, inspect the fitting, connection points, and hopper mounting area for damage or hardened material.
The Titan 0090617 fitting is shown on the live page as discontinued. Do not build a repair plan around that item without confirming current availability or an approved replacement.
Shop Major AirCoat Hopper Components
Use these verified internal links to continue directly to the AirCoat hopper diagram and major replacement components.
Titan AirCoat Hopper Assembly FAQs
Use these answers to identify hopper, filtration, cover, feed, return-tube, and material-flow repairs.