Pentair 350033Z EQ750 plastic diffuser assembly for EQ Series commercial pumpsPentair EQ750 Diffuser Assembly, 7.5HP, 350033Z In stock$71299
Pentair 350033Z EQ750 plastic diffuser assembly for EQ Series commercial pumps
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Pentair EQ750 Diffuser Assembly, 7.5HP, 350033Z

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$71299
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Quick overview

  • Genuine Pentair Factory part number 350033Z for the EQ Series commercial pumps.
  • Plastic diffuser assembly The molded diffuser that directs flow off the impeller into the volute.
  • EQ Series commercial Built for Pentair EQ Series commercial pool and spa pumps in the 7.5 and 10 HP range.
  • Broad model coverage Listed for EQ750, EQK 500 - 750, EQKT 750 - 1000, EQ1000, EQK 750 - 1000 and WQ1001.
  • Restores lost head A cracked or worn diffuser bleeds pressure and shows up as reduced flow across the system.
  • Service it with the seals The diffuser o-ring and the seal plate o-ring are separate parts worth changing at the same time.
Full description and specifications ↓

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Product details

The Pentair 350033Z is the plastic diffuser assembly for the EQ Series commercial pool and spa pumps. It is the genuine Pentair part, listed as the 7.5HP diffuser assembly for the EQ750.

What the diffuser does

Water leaves the impeller fast and turbulent. The diffuser is the molded piece that catches that flow and converts speed into pressure before it reaches the volute. It is doing real work every hour the pump runs, and when it cracks, distorts or wears its clearances open, the pump keeps drawing the same power while delivering noticeably less head. On a commercial system that shows up as poor turnover long before anything sounds wrong.

Fit

Pentair lists this diffuser for use with the EQ-Series Commercial Pool and Spa 7.5 and 10 HP pump models EQ750, EQK 500 - 750, EQKT 750 - 1000, EQ1000, EQK 750 - 1000 and WQ1001. Check your pump against that list rather than the horsepower alone.

The diffuser o-ring and the seal plate o-ring are separate parts. Since the pump has to come apart either way, most techs renew both along with the diffuser.

Specifications
Brand Pentair
Manufacturer part number 350033Z
UPC 788379689681
Type Diffuser assembly
Material Plastic
Horsepower 7.5HP
Series EQ Series commercial
For use with EQ-Series Commercial Pool and Spa 7.5 and 10 HP Pump Models EQ750, EQK 500 - 750, EQKT 750 - 1000, EQ1000, EQK 750 - 1000 and WQ1001
Part type Pool Pump Part
Shipping weight 2 lb
Ships Parcel

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Questions and answers

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

Which pumps does this diffuser fit?
It is listed for the EQ-Series Commercial Pool and Spa 7.5 and 10 HP pump models EQ750, EQK 500 - 750, EQKT 750 - 1000, EQ1000, EQK 750 - 1000 and WQ1001.
The listing says 7.5HP but the fit list includes 10 HP models. Which is right?
Pentair describes 350033Z as the 7.5HP diffuser assembly and also lists it against the 7.5 and 10 HP EQ Series models shown above. Match your pump against that model list before ordering.
Is the o-ring included?
No. The EQ Series diffuser o-ring is a separate Pentair part, as is the seal plate o-ring. Replace them while the pump is apart.
What happens when a diffuser wears out?
The diffuser shapes the water leaving the impeller. When it cracks or the clearances open up, the pump loses pressure and the whole system moves less water for the same power.
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