

Part 800-589A is a fluid section assembly that houses the main pump components for the 740 ix airless sprayer. It contains valves, seals, and pressure chambers that manage paint or coating transfer. This assembly is critical for generating and maintaining spray pressure during operation.
| Part Number | 800-589A |
|---|---|
| Part Description | Fluid Section Assembly |
| Brand | Multiple |
| Fits | 740 ix Airless Sprayer |
| Condition | New |
Part 800-589A is a complete fluid section assembly designed for the 740 ix Airless Sprayer. This critical component houses the pump's valves, seals, and pressure chambers, managing the transfer of paint or coating materials from the inlet to the high-pressure outlet.
A worn, damaged, or leaking fluid section assembly can lead to pressure loss, inconsistent spray patterns, fluid leakage, or complete pump failure. Replacing the assembly restores proper fluid handling and reliable sprayer performance.
| Pressure generation | Creates and maintains high pressure for material atomization |
|---|---|
| Fluid management | Controls the flow of paint or coatings through the pump |
| Component housing | Contains and protects internal pump valves and seals |
| External leakage | Visible fluid leaks from assembly housing or seams |
|---|---|
| Pressure loss | Inability to achieve or maintain spraying pressure |
| Internal wear | Multiple internal components showing excessive wear |
| Casing damage | Cracks, fractures, or severe corrosion in the housing |
Part 800-589A is compatible with the specific airless sprayer model. Always confirm fitment using the correct parts diagram for your exact model and revision.
| Model | Component |
|---|---|
| 740 ix Airless Sprayer | Fluid Section Assembly |
Fluid section assemblies are often replaced alongside internal pump components. When installing this assembly, these parts are commonly inspected or replaced at the same time.
Seals that prevent fluid bypass around the pump piston.
Check valves that control fluid direction within the pump.
Seals between the fluid section and connecting components.