Astral Pool Aster Sand Filter 1-1/2" Diffuser (645) marlig A valve like this is

A valve like this is useful because it allows the user to direct water through multiple operating modes from one control point

000 gallon class helps preserve intended sizing support for compatible pool applications

14 gallons per day using the CAX-3508 reference

This kit has practical value because it groups related drivetrain components into a more coordinated service solution rather than requiring piecemeal replacement

Astral Pool Aster Sand Filter 1-1/2" Diffuser (645) marlig A valve like this isThe Astral Pool Aster sand filter diffuser is designed for compatible 1 1 2 inch sand filter applications where incoming water needs to be dispersed properly inside the tank. A diffuser is useful because it helps guide the water into the filter body in a more controlled way, supporting better internal flow management and more dependable filtration performance. This replacement is especially useful when the original diffuser is cracked, damaged, or no