Pentair Clean & Clear Plus 520 Cartridge [4 Pack] (179136) lightingbulbs A 3-way valve like this

A 3-way valve like this is useful because it allows water to be routed between different plumbing paths

2-1/4 inch face diameter

color-matched renewal

Useful when replacing a failed or noisy original pump

Pentair Clean & Clear Plus 520 Cartridge [4 Pack] (179136) lightingbulbs A 3-way valve like thisLarge cartridge systems depend on clean, properly sized cartridges to maintain flow and water clarity. This four pack of Pentair Clean & Clear Plus 520 cartridges provides a complete replacement set for compatible CCP 520 filter systems. Replacing the full set together helps balance filtration performance across the tank and can reduce pressure issues caused by uneven or aged elements. Four cartridge replacement set for compatible 520 sq ft systems