SprayTech part 520-408 is a fluid tube assembly used to deliver paint or coating material from the sprayer to the spray gun. This assembly replaces worn, cracked, or leaking fluid tubes to restore proper material flow and pressure. It is compatible with Airless S5 and Airless G-15 XL Gun models.
| Part Number | 520-408 |
|---|---|
| Part Description | Fluid Tube Assembly |
| Brand | SprayTech |
| Fits | Airless S5; Airless G-15 XL Gun |
| Condition | New |
The SprayTech 520-408 Fluid Tube Assembly is a replacement component designed to convey pressurized coating material from the sprayer outlet to the spray gun. This assembly is compatible with Airless S5 and Airless G-15 XL Gun models. The fluid tube is a critical pathway in the spray system, and its integrity directly affects spray performance, pressure consistency, and operator safety. Over time, fluid tubes can develop cracks, pinhole leaks, or become weakened by chemical exposure, abrasion, or repeated flexing. A compromised fluid tube may cause visible leakage, pressure drops, erratic spray patterns, or material waste. In severe cases, a burst tube can create a hazardous high-pressure fluid release. Replacing a damaged tube with the 520-408 assembly restores proper fluid delivery and helps maintain consistent operating pressure. This assembly includes the tube and any pre-attached fittings required for installation. Before replacement, inspect the sprayer outlet and gun inlet fittings for damage or debris. When installing, ensure all connections are clean and tightened to the manufacturer's specified torque. Do not over-tighten, as this may damage fittings or threads. Regular inspection of the fluid tube assembly for wear, kinks, or chemical softening is recommended as part of routine sprayer maintenance.
| Conveys coating material | Delivers paint from sprayer to gun under pressure |
|---|---|
| Maintains pressure | Integral tube walls prevent pressure loss during spraying |
| Provides safe fluid path |
| Visible cracks or leaks | Paint seeps from tube surface or at fitting connections |
|---|---|
| Bulging or swelling | Tube wall deformed indicating internal weakening |
| Pressure drop | Spray gun receives reduced pressure despite sprayer output being normal |
| Kinked or crushed tube | Restricted flow causing poor spray performance |
SprayTech part 520-408 is compatible with the following airless spray equipment. Always confirm fitment using the correct parts diagram for your exact model.
| SprayTech Model | Component |
|---|---|
| Airless S5 | Fluid tube assembly |
| Airless G-15 XL Gun | Fluid tube assembly |
When replacing a fluid tube assembly, these related components are often inspected or replaced at the same time.
Inspect for wear or leakage where the tube connects to the gun.
Check for damage, thread wear, or debris that could affect seal.
Clean or replace to prevent debris from entering the new fluid tube.
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