Sta-Rite Diffuser 1.5 HP to 2 HP Dyna-Glas/Max, C1-270P

The Sta-Rite C1-270P is the genuine diffuser for 1.5 HP and 2 HP Dyna-Glas and Dyna-Max pool pumps. It is the plastic housing that sits directly over the impeller inside the pump volute.

Why the diffuser matters

An impeller throws water outward at speed. On its own that is turbulence, not useful flow. The diffuser captures that water in a shaped passage and turns velocity into pressure, which is what pushes water through the filter and back to the pool. When the diffuser cracks, or when its face wears where it runs close to the impeller, water simply recirculates inside the pump. The result looks like a filter problem: weak returns, poor skimming and a pump that runs hot for nothing.

Before you order

This diffuser is listed for the 1.5 HP and 2 HP builds, so read the horsepower on the motor label rather than going by the pump body. Our catalog also files this part under Sta-Rite Dyna-Pro and Dyna-Pro E pump parts, so if you are working on a Dyna-Pro, match the number cast into the old diffuser before you buy.

Diffusers and impellers wear against each other. While the wet end is open it is worth checking the impeller for wear and the shaft seal for weeping, since the labor is already done.