Filbur FC-3091 C-5621 PTL25 Spa/Pool Filter Cartridge dialvalves An air switch helps convert

An air switch helps convert pneumatic button input into electrical switching action in a compatible control system

supporting both the air and water path while helping the internal components fit and function correctly

This American/Pentair Warrior/CC Drain Cap (51516200) is engineered for fittings & valves: plugs applications

Supports a more finished and factory-correct visible result

This American/Pentair/PacFab Bulkhead Fitting (271096) is engineered for sand filters & parts applications

Filbur FC-3091 C-5621 PTL25 Spa/Pool Filter Cartridge dialvalves An air switch helps convertA spa and pool filter cartridge helps trap suspended debris inside a compatible filtration system, and this Filbur FC 3091 cartridge is designed for C 5621 and PTL25 applications. When the original cartridge becomes worn, loaded, or less effective, the system can lose the dependable support it should provide during operation. The FC 3091, C 5621, and PTL25 compatibility give this part practical value because cartridge filters work best when the