At Fluytec, we understand the importance of choosing the right filter housing for your application. But did you know the color of your FRP (fiberglass reinforced plastic) cartridge can also play a significant role in performance?
While aesthetics might be a primary consideration when selecting a housing, the color can significantly impact the UV reflectance of the FRP material. This, in turn, affects the operating temperature of the vessel and the filtered fluid, especially in outdoor installations.
Understanding UV Reflectance and its Impact:
Different colors exhibit varying degrees of UV reflectance. Here’s a breakdown of some common FRP cartridge colors and their UV reflectance properties, represented as a percentage:
| Color (RAL) | UV Reflectance (%) |
|---|---|
| White (RAL 9003) | 75–80 |
| Blue (RAL 5015) | 40–50 |
| Green (RAL 6035) | 20–30 |
| Red (RAL 3020) | 5–10 |
| Black (RAL 9005) | 5–10 |
Color and Performance Considerations:
Lower UV reflectance can lead to:
- Higher Operating Temperatures: As the FRP absorbs more UV rays (and reflects less), the temperature of the vessel and the contained fluid can rise. This can be detrimental to filter performance and potentially damage sensitive components or shorten the lifespan of the filter media.
- Chemical Degradation: Prolonged UV exposure can accelerate the breakdown of the FRP material, leading to premature weakening and potential structural issues.
Fluytec’s Added Protection:
It’s important to note that Fluytec’s FRP cartridge filter housings go beyond the base material. Our proprietary surface treatment includes a UV protection coating to further enhance UV resistance and minimize potential performance degradation caused by UV exposure.
Choosing the Right Color for Optimal Performance:
For outdoor applications or when dealing with heat-sensitive fluids, opting for colors with higher UV reflectance, like the white ones, is always advisable. This helps maintain lower operating temperatures and extends the lifespan of the housing. Conversely, if targeting specific UV wavelengths for applications involving UV disinfection, a color with lower reflectance like blue or green could be considered.
Black (RAL 9005) shares a similar UV reflectance range to red (RAL 3020) and absorbs a high percentage of UV rays. While it may be aesthetically pleasing, it’s not the best choice for applications requiring low heat gain.
Conclusion: Color Matters
While the color of your FRP cartridge filter might seem like a purely aesthetic choice, it has a significant impact on performance, particularly in outdoor environments. By understanding how color affects UV reflectance and its potential consequences, you can select the most suitable option for your specific application.
At Fluytec, we can help you choose the right FRP cartridge filter housing and color based on your specific needs and operating conditions. Our expert staff and advanced surface treatment technology ensure you receive a high-performance, long-lasting filtration solution. Contact us today for a consultation!

