PowrLiner part 0290770 is a tank cover designed to seal the material tank on compatible PowrLiner 4950 and 6950 sprayers. This cover prevents contamination, reduces solvent evaporation, and maintains proper pressure during operation. Replacing a cracked, warped, or missing tank cover ensures a secure seal and helps maintain consistent spraying conditions.
| Part Number | 0290770 |
|---|---|
| Part Description | Tank Cover |
| Brand | PowrLiner |
| Fits | PowrLiner 4950, 6950 |
| Condition | New |
The PowrLiner 0290770 Tank Cover is an OEM-grade replacement component designed to seal the material tank on PowrLiner 4950 and 6950 line stripers. It fits securely over the tank opening, creating a barrier that keeps debris and contaminants out while minimizing solvent evaporation during operation and storage.
A properly sealed tank is essential for maintaining material consistency and preventing skinning or contamination of paints and coatings. Over time, tank covers can become cracked from UV exposure, warped from heat, or damaged during routine handling. A compromised cover allows air to enter, accelerating solvent loss and potentially introducing foreign material into the paint. Replacing a damaged tank cover restores the integrity of the material tank and ensures reliable performance on every job.
| Containment | Keeps material inside the tank during transport and operation |
|---|---|
| Contamination prevention | Blocks debris, dust, and moisture from entering the tank |
| Evaporation reduction | Minimizes solvent loss, preserving material viscosity |
| Visible cracks | Cover has stress fractures or holes |
|---|---|
| Warping / distortion | Cover no longer sits flush on the tank opening |
| Missing cover | Cover lost during transport or operation |
| Excessive material skinning | Air ingress causing paint to cure inside tank |
Part 0290770 is compatible with the following PowrLiner models. Always verify fitment using your equipment's parts diagram before ordering.
| Model | Component |
|---|---|
| PowrLiner 4950 | Tank Cover |
| PowrLiner 6950 | Tank Cover |
When replacing the tank cover, these associated components are often inspected or replaced at the same time.
The sealing ring between cover and tank; replace if compressed or brittle.
Check latches or clamps for proper tension and operation.
Inspect and clean the tank outlet filter while the cover is removed.
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