Titan Fine-Finish Sprayer Parts · AirCoat
Restore Reliable Priming, Pressure, and Fluid Control With Correct Pump-Head Parts
Shop diagram-matched components for the Titan AirCoat Air-Assisted Pump Head Assembly, including the inlet valve, inlet cap, sealing washer, low-profile block, prime/spray valve, diaphragm ring, threaded connector, outlet spring, outlet ball, valve seat, outlet seal, outlet fitting, and diaphragm assembly. Match the numbered diagram callout to the exact Titan part number before ordering.
What the AirCoat Pump Head Assembly Contains
The AirCoat Air-Assisted Pump Head Assembly is the primary fluid-handling section responsible for drawing coating into the sprayer, pressurizing it, and delivering a controlled material flow to the spray gun. It works with the pneumatic drive system to convert compressed-air power into the reciprocating movement required for dependable high-pressure coating delivery.
During operation, material enters the pump head from the hopper or optional suction set. The pump’s internal inlet components admit coating during the intake stroke, while the outlet components direct pressurized material toward the high-pressure filter, fluid regulator, hose, and AirCoat spray gun. Regulated assist air introduced at the gun completes atomization and helps produce a controlled spray pattern with reduced overspray and consistent finish quality.
The pump head assembly contains the fluid passages, inlet and outlet valve components, piston or displacement components, packings, seals, seats, balls, springs, fittings, and retaining hardware required to control material intake and discharge. These precision components must seal correctly and move freely to maintain pressure, prevent internal bypass, and deliver a steady coating supply throughout each pump cycle.
The inlet valve opens as the pump draws material into the fluid section and closes when the pump changes direction. The outlet valve then permits pressurized coating to leave the pump while preventing reverse flow. Packings and seals maintain pressure around the moving displacement components, while the pump housing keeps the internal fluid path aligned and contained.
A properly serviced AirCoat Pump Head Assembly supports reliable priming, stable operating pressure, uniform material delivery, and consistent spray performance. Worn packings, damaged valve balls or seats, clogged passages, hardened coating deposits, loose fittings, or deteriorated seals can cause pressure loss, fluid leakage, difficult priming, pump cycling without material delivery, or an uneven spray pattern.
Systems Supported by the Pump Head
- Controls coating entry through the inlet valve assembly, inlet cap, and sealing washer.
- Directs fluid between prime and spray modes through the prime/spray valve assembly.
- Creates pumping displacement through the diaphragm ring and diaphragm assembly.
- Maintains one-way outlet flow through the spring, support, ball, valve seat, and outlet-seat seal.
- Connects the completed pump head to the fluid hose through the threaded connector and outlet fitting.
When Contractors Use This Parts Diagram
- Diagnosing a sprayer that will not prime or draws material inconsistently.
- Correcting pressure loss, fluid bypass, leakage, pulsing, or weak spray output.
- Repairing a prime/spray valve that leaks, sticks, or does not fully redirect flow.
- Replacing worn outlet-check components such as the ball, spring, support, seat, or seal.
- Identifying exact pump-head parts before diaphragm, inlet, outlet, or fluid-fitting service.
Common AirCoat Pump Head Symptoms
Use the symptom to locate the likely inlet, prime/spray, diaphragm, outlet-check, or sealing area, then inspect connected parts before ordering.
High-Value AirCoat Pump Head Parts
These major inlet, flow-control, outlet-check, connection, and diaphragm components represent the most important pump-head repair areas.
Titan 0278242 Inlet Valve Assembly
Controls coating-material entry into the pump head and supports reliable priming.
Titan 0555850 Prime/Spray Valve Assembly
Directs fluid between recirculation for priming and delivery to the spray gun.
Titan 0270491 Outlet Ball
Provides the moving sealing element within the pump-head outlet check-valve system.
Titan 0270197 Valve Seat Assembly
Provides the precision sealing surface required for shutoff and controlled outlet flow.
Titan 0288379 Outlet Fitting
Connects the fluid hose securely to the pump-head outlet port.
Titan 0278240 Diaphragm Assembly
Converts hydraulic movement into coating-material displacement within the AirCoat pump.
How to Order the Correct AirCoat Pump-Head 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 issue involves priming, pressure, leakage, pulsing, bypass, valve operation, or hose connection.
Verify the assembly
Confirm the machine uses the Titan AirCoat pump-head configuration shown on this exploded-parts page.
Match the callout
Locate the component on the pump-head drawing and record its numbered item and exact Titan part number.
Inspect mating parts
Check adjoining seals, springs, balls, seats, washers, connectors, and surfaces before ordering.
Maintenance Practices That Protect the Pump Head
- Relieve all fluid pressure and disconnect power before opening the pump head.
- Flush compatible cleaning material through the system before coating residue hardens.
- Inspect the inlet valve and prime/spray valve for contamination, leakage, or restricted movement.
- Check the outlet ball, spring, support, seat, and seal for wear, pitting, or debris.
- Inspect the diaphragm and diaphragm ring for damage, distortion, or leakage.
- Examine sealing washers, threaded connectors, outlet fittings, and mating surfaces during service.
- Replace damaged seals and check-valve parts rather than reusing components with uncertain condition.
Build a More Complete AirCoat Pump-Head Repair
When replacing the inlet valve, inspect the inlet cap and nylon sealing washer. When replacing outlet-check parts, inspect the spring, support, ball, seat, outlet-seat seal, fitting, and all mating surfaces together.
When replacing the diaphragm, inspect the diaphragm ring, pump-head block, seals, and both inlet and outlet flow controls. A system-level repair reduces repeat teardown and recurring pressure loss.
Shop Major AirCoat Pump Head Components
Use these verified internal links to continue directly to the complete pump-head diagram and major replacement components.
Titan AirCoat Pump Head Assembly FAQs
Use these answers to confirm inlet, prime/spray, diaphragm, outlet-check, sealing, and fitting repairs.