Pentair Impeller 1 HP | Dynamo Pump — Dynamo Series | 355122Z Diving Board Stands When replacing this nut

When replacing this nut

NOTE: If you are doing a scale treatment

With 146 pleats of 4 oz

Mechanical seal (carbon and ceramic) between impeller and backplate

confirm your existing light niche size and the cord length required for your installation — measure the distance from the niche to the junction box along the actual cord path

Pentair Impeller 1 HP | Dynamo Pump — Dynamo Series | 355122Z Diving Board Stands When replacing this nutThe Pentair 355122Z is the OEM replacement 1 HP impeller for the Dynamo aboveground swimming pool pump. If your Dynamo pump has lost prime, is running loud, or is delivering noticeably reduced flow, a worn or damaged impeller is one of the first components to inspect. What It Does The impeller is the rotating component inside the pump volute that draws water through the strainer housing and drives it through your filtration system. A cracked, worn, or