Part 704-185 is a complete fluid section assembly designed for select Airless sprayers. This assembly is responsible for pressurizing and delivering coating material consistently during spraying operation.
The fluid section assembly integrates critical pumping and sealing components into a single unit, making it suitable for full pump replacement when wear, leakage, or pressure instability occurs.
| Part Number | 704-185 |
|---|---|
| Part Description | Fluid Section Assembly |
| Function | High-pressure material pumping |
| Fits | Airless Sprayer 340; Airless Sprayer 440i |
| Condition | New |
The 704-185 Fluid Section Assembly is a complete pump module used on Airless Sprayer 340 and 440i models. The fluid section is the core of the pumping system, generating the pressure required to move coating material from the supply source to the spray gun.
This assembly includes the primary wear, sealing, and pumping components preassembled into a single unit. Replacing the entire fluid section is often preferred when internal wear is extensive or when rapid service turnaround is required.
| Pressure generation | Creates high pressure for material delivery |
|---|---|
| Sealing control | Maintains pressure through packing and valve systems |
| Flow consistency | Supports steady, even spray output |
| Pressure loss | Sprayer cannot maintain operating pressure |
|---|---|
| Internal leakage | Material bypass despite repacking |
| Excessive wear | Multiple internal components worn |
| Time-critical service | Complete assembly replacement preferred |
Part 704-185 is compatible with the following airless paint sprayers. Always confirm model configuration using the correct parts diagram.
| Sprayer Model | Component |
|---|---|
| Airless Sprayer 340 | Fluid section assembly |
| Airless Sprayer 440i | Fluid section assembly |
Fluid section replacement is often paired with inspection of additional pump components.
Used when rebuilding instead of replacing the full assembly.
Worn valves can affect pressure stability.
Surface wear can accelerate packing failure.
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