Waterway Union Adapter [2" FBT x 2-1/2" MBT] [Without O-Ring] (415-6010) filters and PCM90 compatibility give this

and PCM90 compatibility give this part practical value because cartridge filters work best when the replacement matches the intended housing and service application closely

The included sensor matters because it helps preserve the way the M7 system expects to read and respond to heater-side conditions

the work can become less precise than it should be

This American/Pentair/PacFab Back Up Ring [FNS/Quad DE/CC] (195339) is engineered for DE filters & parts applications

Improves heater control and replacement confidence

Waterway Union Adapter [2" FBT x 2-1/2" MBT] [Without O-Ring] (415-6010) filters and PCM90 compatibility give thisThe Waterway 415 6010 union adapter is designed for compatible plumbing applications using a 2 inch female buttress thread connection and a 2 1 2 inch male buttress thread outlet, and it is supplied without an O ring. An adapter like this is useful where one union thread format must transition into another while preserving compatibility within the surrounding assembly. This kind of Waterway adapter can be especially practical in retrofit and