Part 103-402 is a replacement aluminum tube used in the fluid delivery system of compatible PowrTex airless sprayers. It serves as a conduit for paint or coating material between pump components, fittings, or the spray gun. This tube restores proper fluid flow and system integrity when original tubes become bent, cracked, or corroded.
| Part Number | 103-402 |
|---|---|
| Part Description | Tube aluminum |
| Brand | Genuine replacement |
| Fits | PowrTex 15-1 |
| Condition | New |
The 103-402 aluminum tube is a precision-formed fluid conduit used in the PowrTex 15-1 airless sprayer. It is typically employed to transport paint, stain, or coating material between key components such as the pump outlet, filters, or the hose connection point. Aluminum is chosen for this application due to its excellent combination of strength, light weight, and corrosion resistance. Unlike steel, aluminum resists rust from water-based coatings and is less likely to react with the solvents found in many professional paints. Its smooth interior surface minimizes flow resistance and prevents material buildup that could lead to clogs or pressure drops.
In the demanding environment of professional painting, aluminum tubes are subjected to continuous pressure cycles, vibration from the pump, and potential impact from job site handling. Over time, a tube can become bent from accidental impact, making installation difficult and potentially restricting flow. Cracks can develop from stress fatigue, particularly at fitting attachment points where vibration is concentrated. Corrosion, while less common with aluminum, can occur if the tube is exposed to harsh chemicals or if dissimilar metal fittings promote galvanic corrosion. Any of these conditions can lead to leaks, pressure loss, or complete failure of the fluid path, causing downtime and potential safety hazards from high-pressure fluid leaks.
Replacing a damaged tube with the 103-402 aluminum tube restores the integrity of the fluid delivery system. The replacement tube is manufactured to the exact original specifications, including length, diameter, wall thickness, and end configurations. This ensures proper fitment with existing fittings and components without the need for modification or adaptation. During installation, it is important to inspect the mating fittings for thread damage or wear and to use appropriate thread sealant if required. The tube should be positioned to avoid contact with moving parts or sources of abrasion. Once installed, the new tube provides reliable, leak-free service, ensuring that material flows smoothly from pump to gun. For PowrTex 15-1 owners, maintaining the fluid conduits in good condition is essential for consistent spray performance and long equipment life.
| Fluid conveyance | Transports paint between pump components |
|---|---|
| Pressure containment | Withstands high operating pressures |
| Corrosion resistance | Aluminum resists rust from water-based coatings |
| Flow maintenance | Smooth interior minimizes clogs and pressure drops |
| Bent tube | Visible deformation that restricts flow or prevents installation |
|---|---|
| Cracks / leaks | Fluid seeping from tube surface or fittings |
| Corrosion damage | Pitting or surface degradation from chemical exposure |
| Fitting damage | Threads or sealing surfaces are damaged |
This aluminum tube (part 103-402) is designed for use in the following airless sprayer model. Always verify fitment with your machine's parts diagram.
| Series / Model | Component |
|---|---|
| PowrTex 15-1 | aluminum tube |
When servicing fluid tubes, consider inspecting these companion parts.
Check for thread damage or wear; replace if questionable.
Inspect sealing elements at tube connections; replace if hardened or cut.
Ensure mounting hardware is secure to prevent vibration damage.
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