Sta-Rite C1-271P1Z diffuser for Max-E-Pro series pumpsSta-Rite Diffuser 1/2 HP to 1-1/2 HP for Max-E-Pro Series Pumps, C1-271P1Z In stock$4299
Sta-Rite C1-271P1Z diffuser for Max-E-Pro series pumps
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Sta-Rite Diffuser 1/2 HP to 1-1/2 HP for Max-E-Pro Series Pumps, C1-271P1Z

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$4299
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Quick overview

  • Sta-Rite part C1-271P1Z The factory diffuser for the Max-E-Pro series, ordered by part number.
  • Check your horsepower The listing title covers 1/2 HP to 1-1/2 HP, while the manufacturer description names 3/4 HP and 1 HP. Match your motor before ordering.
  • Works with the impeller The diffuser seats over the impeller and shapes the flow leaving it, so the two wear as a pair.
  • Also in the Max-E-Glas II and Dura-Glas II diagrams The part is listed in those Sta-Rite parts diagrams as well.
  • Replace the O-ring too A separate diffuser O-ring seals it to the volute and is worth changing at the same time.
  • Restores lost flow A cracked or worn diffuser leaks flow back inside the pump and shows up as weak return pressure.
Full description and specifications ↓

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Product details

The Sta-Rite C1-271P1Z is the replacement diffuser for the Max-E-Pro series pump. It is the part that seats over the impeller inside the pump body.

What it does

The impeller throws water outward; the diffuser collects that flow and directs it into the volute so it leaves the pump as pressure instead of turbulence. A diffuser that has cracked, or whose center opening has worn open around the impeller nose, lets water recirculate inside the housing. The symptom is weak return flow that does not improve after you clean the pump basket and the filter.

Confirm the horsepower

The source information for this part is not consistent on horsepower. The listing title covers 1/2 HP through 1-1/2 HP, while the manufacturer description names 3/4 HP and 1 HP. Compare the diffuser you have taken out against the photographs, and check the horsepower on the motor label, before you order.

While the pump is open

The diffuser O-ring is a separate part and is the seal between the diffuser and the volute. Since the pump has to come apart either way, it makes sense to fit a new O-ring, and to look over the impeller and shaft seal at the same time.

From Pool School

How to Prime a Pool PumpFrom the breaker to a full pot, each manufacturer's time limit, and what to check when it won't catch prime. Read Replace the Pool Pump Motor or the Whole Pump?The manufacturers' tests first, what each repair replaces, and the federal motor rule. Read

Where this part goes

11 Key 11 on the Sta-Rite Max-E-Pro PumpFor the P6E6C-204L (1/2 HP), P6E6D-205L (3/4 HP), P6R6D-205L (3/4 HP), 348150 (1 HP), P6E6E-206L (1 HP), P6EA6E-205L (1 HP), P6RA6E-205L (1 HP), P6R6E-206L (1 HP), P6EA6F-206L (1-1/2 HP), P6RA6F-206L (1-1/2 HP).See it on the diagramAll Sta-Rite Max-E-Pro Pump Parts 79 parts and the drawing
Specifications
Brand Sta-Rite
Manufacturer part number C1-271P1Z
UPC 788379733049
Type Pump diffuser
Fits Sta-Rite Max-E-Pro series pumps
Horsepower range, per listing title 1/2 HP to 1-1/2 HP
Horsepower range, per manufacturer description 3/4 HP and 1 HP
Also listed under Sta-Rite Max-E-Glas II and Dura-Glas II pump parts
Part category Pool pump part
Shipping weight 0.55 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which horsepower does this diffuser cover?
The source data does not agree. The listing title gives 1/2 HP to 1-1/2 HP and the manufacturer description gives 3/4 HP and 1 HP. Compare the old diffuser and your motor label before ordering.
What does a diffuser actually do?
It sits over the impeller and channels the water leaving the vanes into the volute. Without it the impeller spins water in place and the pump loses pressure.
Should I replace the O-ring as well?
Yes, if you have the pump apart. The diffuser O-ring is a separate Sta-Rite part and it is the seal that keeps flow from bypassing the diffuser.
How do I know the diffuser has failed?
Look for cracks around the nose, a worn or grooved center opening, and weak return flow that does not improve after cleaning the basket and the impeller.
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