Pleatco PA50 Replacement Pool Filter Cartridge (50 Sq Ft)
The Pleatco PA50 is a 50 square foot replacement pool filter cartridge designed for select Hayward and Pentair/Purex cartridge filter systems that use a 7″ diameter, open 3″ top and bottom core design. It captures fine debris to help maintain strong circulation, cleaner water, and more consistent filtration performance.
Key Specifications
- Filtration Area: 50 sq ft
- Outside Diameter: 7″
- Length: 19-3/4″ (commonly listed as 19-5/8″ to 19-3/4″ depending on measuring method)
- Top: Open hole, 3″ inside diameter
- Bottom: Open hole, 3″ inside diameter
Common Replaces / Cross-References
- Unicel: C-7656
- Filbur: FC-1240
- OEM References: CX500-RE, R173409, 27-079
Common System Compatibility
- Hayward Star-Clear: C500
- Hayward Easy Clear: C550
- Pentair / Purex: CF-50
What This Cartridge Does
- Traps dirt, pollen, sand, and fine debris before it returns to the pool.
- Helps maintain steady flow to improve overall filtration and water clarity.
- Reduces strain on the pump caused by debris loading and restricted flow.
When to Replace
- Pleats are flattened, frayed, torn, or separating from end caps
- Cartridge will not rinse clean or remains discolored after deep cleaning
- Persistent cloudy water or reduced flow even after cleaning
- End caps are cracked or the cartridge no longer seats securely
Related Products (Aqua Pool Supply)
- Cartridge filter cleaner
- Filter cleaning tools
- Pool & spa O-ring lubricant
- Filter tank O-rings
- Pool filter pressure gauges
Installation and Maintenance Tips
- Rinse the cartridge when the filter pressure rises 8–10 PSI over your clean starting pressure.
- Use a deep-clean filter soak as needed to remove oils and scale, then rinse thoroughly before reinstalling.
- Always shut the pump off and relieve pressure before opening the filter.
- Inspect and clean the filter tank O-ring each time you open the filter; lubricate lightly with pool-safe silicone lubricant.
- For best results, rotate between two cartridges so one can dry fully after cleaning.
