Onga Clean & Clear Plus 420 Cartridge Filter for High Flow Pool Systems with Continuous High Flow™ Air Relief

Longer operating cycles and increased dirt holding capacity can make a noticeable difference in residential pool maintenance schedules, particularly during heavy seasonal use. The Onga Clean & Clear Plus 420 addresses this through a large four-cartridge filtration assembly designed to capture fine suspended particles while reducing the frequency of cartridge cleaning.

Inside the vessel, the combined cartridge surface area reaches 420 sq.ft. / 39.0 m² and supports maximum circulation flow rates up to 568 L/Min. The filter is also rated for approximately 272,550 litres of turnover capacity over an 8-hour operating cycle. Its quad cartridge arrangement provides substantially more available filtration surface area compared with smaller cartridge filter designs, assisting both debris retention and lower hydraulic resistance.

The filter tank is manufactured using injection moulded glass reinforced polypropylene for structural rigidity and corrosion resistance around chemically treated pool water environments. Continuous High Flow™ internal air relief technology assists removal of trapped air from the vessel during operation to support more consistent filtration efficiency and circulation stability.

Maintenance access is handled through Pentair’s Tension Control™ clamp system which allows quick separation of the vessel for cartridge rinsing and inspection. A 1/4 turn air relief valve with integrated hose port assists controlled pressure release before servicing, while the 40 mm drain clean-out port simplifies draining procedures. The unit is supplied with 50 mm barrel unions and requires 1727 mm of vertical clearance for cartridge removal access. :contentReference[oaicite:1]{index=1}

• 420 sq.ft. / 39.0 m² effective filtration area for larger residential pool systems
• Quad cartridge design assisting longer filtration cycles between cleanings
• Maximum operating flow rate reaching 568 L/Min
• Approximate turnover capacity of 272,550 litres over 8 hours
• Injection moulded glass reinforced polypropylene vessel construction
• Balanced hydraulic flow path supporting efficient cartridge circulation
• Continuous High Flow™ air relief system reducing internal air build-up
• Tension Control™ clamp arrangement simplifying maintenance procedures
• 1/4 turn air relief valve with hose port and 40 mm drain clean-out port
• 10 year pro-rata limited warranty*