Pentair 355334 hex washer head diffuser screw for Challenger and SuperFlo pumpsPentair Hex Head Screw for Diffuser, 355334 In stock$799
Pentair 355334 hex washer head diffuser screw for Challenger and SuperFlo pumps
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Pentair Hex Head Screw for Diffuser, 355334

Ask a questionMPN 355334
$799
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Quick overview

  • Genuine Pentair part Factory screw 355334, the same fastener the pump left the plant with.
  • Holds the diffuser This is the screw that clamps the diffuser to the pump housing.
  • Size 8-32 x 1/2 inch A hex washer head machine screw, not a generic sheet metal screw.
  • Challenger and SuperFlo Used on Pentair Challenger high head and high flow models and on SuperFlo pumps.
  • Hex washer head The wide washer face spreads load on the plastic diffuser so it seats evenly.
  • Cheap insurance Screws corrode and round off, so replacing them during a seal or impeller job saves a return trip.
Full description and specifications ↓

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Product details

The Pentair 355334 is the hex head screw that holds the diffuser in place inside the pump. It is an 8-32 x 1/2 inch hex washer head screw, supplied as the genuine Pentair part.

What it does

The diffuser sits over the impeller and directs flow into the volute. It has to be clamped down square, and the wide washer face on this screw spreads the load across the plastic so the diffuser seats evenly instead of pulling into one point.

When to replace it

Pool pump hardware lives in a wet, chemical rich environment. Screws corrode, heads round off, and threads gall on removal. If you already have the pump open for a mechanical seal, an impeller or a diffuser, new screws cost very little and save a second trip to the equipment pad.

It fits Pentair Challenger high head and high flow models and the SuperFlo pump. Count the fasteners you are removing so you order the right quantity.

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

17 Key 17 on the Pentair SuperFlo PumpFits every model in the drawing.See it on the diagramAll Pentair SuperFlo Pump Parts 38 parts and the drawing12 Key 12 on the Pentair Challenger PumpFits every model in the drawing.See it on the diagramAll Pentair Challenger Pump Parts 48 parts and the drawing
Specifications
Brand Pentair
Manufacturer part number 355334
UPC 788379699338
Type Diffuser screw
Size 8-32 x 1/2 inch
Head Hex washer head
Fits Pentair Challenger high head and high flow models, Pentair SuperFlo
Shipping weight 0.02 lb
Ships Parcel

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Questions and answers

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

What size is this screw?
It is an 8-32 x 1/2 inch hex washer head screw, Pentair part 355334.
Which pumps use it?
Pentair lists it for the Challenger high head and high flow models and for the SuperFlo pump.
How many do I need?
That depends on your diffuser, so count the screws you are removing before ordering. This listing is the individual screw.
Can I use a hardware store screw instead?
The thread and head size have to match so the diffuser seats square against the housing. The Pentair part removes the guesswork.
Ask your own question