Pentair Diffuser Assembly | TR-40/50 Sand Filter | 154598 Vacuum Heads check all wheel tube bearings

check all wheel tube bearings at the same service interval — uneven wear across multiple bearing positions is common

Measure your existing basket's outside diameter before ordering — some SP1091 and SP1096 variants shipped with different basket sizes depending on production date

including the 300-29X Commercial Size Feeder

It is the only way to know your required dosage and if you are making progress in the phosphate removal process

Refer to your Great White cleaner's parts diagram to confirm all kit contents align with your service need before ordering

Pentair Diffuser Assembly | TR-40/50 Sand Filter | 154598 Vacuum Heads check all wheel tube bearingsThe Pentair Diffuser Assembly (154598) is the OEM replacement diffuser assembly for the Pentair TR 40 and TR 50 fiberglass sand filter series. What It Does The diffuser assembly directs the flow of water evenly across the filter sand bed, ensuring consistent filtration performance. A cracked, warped, or missing diffuser results in uneven water distribution through the media, reducing filtration efficiency and potentially allowing unfiltered water to