Description
Upgrade your spa or pool filtration with the Darlly Spa/Pool Replacement Filter Cartridge 80506. Engineered as a PSR50 (FC-2530) replacement, this cartridge is purpose-built for Sta-Rite and Pentair ProLine filter systems. It packs 50 square feet of filtration surface into a compact 8-11/16″ diameter by 13-5/16″ length bundle, delivering cleaner water and easier maintenance for your daily swim and soak routine.
Key specifications
- Diameter: 8-11/16″
- Length: 13-5/16″
- Top style: Open, 4-3/16″
- Bottom style: Open, 4-3/16″ (with 12 concentric slots)
- Media: 4 oz (Pleatco PSR50 equivalent) filtration media
- Filtration area: 50 sq ft
- Application: Sta-Rite / Pentair systems
- Model compatibility: Posi-Flo TX/TXR/PTM
- Cross-reference: Pleatco PSR50 FC-2530
What makes this cartridge stand out
The 80506 PSR50 cartridge is designed to maximize filtration efficiency within a standard ProLine footprint. With a generous 50 sq ft of media, it captures more debris per pass, helping to maintain crystal-clear water while reducing the frequency of cleanings. The open-top and open-bottom configuration (both 4-3/16″) ensures a secure seal in compatible housings and promotes straightforward installation. The bottom’s 12 concentric slots are engineered to distribute water evenly across the filter media, minimizing channeling and extending media life.
Ideal use cases
- Replacement cartridge for Sta-Rite and Pentair spa and pool filters
- Upgrading worn-out cartridges in ProLine filter systems
- Pools and spas that require a 50 sq ft filtration solution in a compact form factor
- Situations where a reliable, open-ended cartridge helps simplify installation and maintenance
Who should consider this replacement
Homeowners and maintenance pros with Sta-Rite or Pentair ProLine filter housings looking to restore peak filtration performance will appreciate the 80506 PSR50. Its compatibility with TX/TXR/PTM model families makes it a versatile choice for a range of spa and pool setups, ensuring you get a dependable, cross-referenced replacement without guessing about fit.
Compatibility and installation notes
This cartridge is designed to fit standard ProLine configurations with open-top and open-bottom ends (4-3/16″ openings). Its 8-11/16″ diameter and 13-5/16″ length align with common Sta-Rite/Pentair housings, making it a straightforward swap for existing PSR50/FC-2530 equivalents.
Ready to refresh your water quality? Choose the Darlly 80506 PSR50 replacement cartridge for a reliable, high-surface-area filtration solution built for Sta-Rite and Pentair systems.
| Application | StaRite/Pentair |
| Bottom Physical Dimension | 4-3/16″ |
| Bottom Style | Open |
| Diameter | 8-11/16″ |
| Length | 13-5/16″ |
| Media Type | 4oz |
| Model | Posi-Flo TX/TXR/PTM 50 |
| Square Footage | 50 sq ft |
| Top Physical Dimension | 4-3/16″ |
| Top Style | Open |
