Pentair 400010Z Whisperflo XF 3HP pump diffuserPentair Whisperflo XF 3HP Diffuser, 400010Z In stock$9199
Pentair 400010Z Whisperflo XF 3HP pump diffuser
Shop all Pentair

Pentair Whisperflo XF 3HP Diffuser, 400010Z

Ask a questionMPN 400010Z
$9199
In stock
Get volume pricing Request a quote

30 day returns · Easy, with prepaid labels provided

Quick overview

  • Genuine Pentair part The factory 400010Z diffuser for the XF series wet end.
  • Fits three pump families Listed for WhisperFloXF, IntelliFloXF variable speed and Sta-Rite 2 and 3 HP pumps.
  • Directs flow to the impeller The diffuser is what turns impeller velocity into usable pressure at the discharge.
  • A quiet cause of lost flow A cracked or worn diffuser lets water recirculate inside the volute instead of leaving the pump.
  • Serviced with the seal Getting to the diffuser means opening the wet end, so the shaft seal and o-rings are worth checking at the same time.
  • Direct replacement Drops into the existing wet end in place of the original diffuser.
Full description and specifications ↓

Need a hand?

Bilingual support from pool professionals.
(888) 751-8084CallChat with a techChatEmail usEmail

Send us a message

A pool professional will get back to you, usually the same business day.

About Pentair Whisperflo XF 3HP Diffuser, 400010Z, SKU PAC-101-0010. We will include it with your message.

We use your details to answer this message and nothing else.

Frequently bought together

Current item Pentair Whisperflo XF 3HP Diffuser, 400010Z
Pentair

Whisperflo XF 3HP Diffuser, 400010Z

$9199
Pentair Genuine OEM Seal Kit for WhisperFlo and IntelliFlo Pool Pumps, 356198
Pentair

Genuine OEM Seal Kit for WhisperFlo and IntelliFlo Pool Pumps, 356198

$3799
Pentair WhisperFlo and IntelliFlo Volute Housing Replacement Kit, 357149
Pentair

WhisperFlo and IntelliFlo Volute Housing Replacement Kit, 357149

$28799
Pentair 3.2 kW IntelliFloXF VSF, VSF, VS+SVRS, i1, i2 Motor, 350305S
Pentair

3.2 kW IntelliFloXF VSF, VSF, VS+SVRS, i1, i2 Motor, 350305S

$78199
Pentair Lid O-Ring, 5-3/4" ID, 350013Z
Pentair

Lid O-Ring, 5-3/4" ID, 350013Z

$599
Pentair IntelliFlo3 and IntelliPro3 Pump Rebuild Seal Set Kit, 357872
Pentair

IntelliFlo3 and IntelliPro3 Pump Rebuild Seal Set Kit, 357872

$3099
Pentair Screw 1/4-20 x 1 Left Hand Thread, 071652Z
Pentair

Screw 1/4-20 x 1 Left Hand Thread, 071652Z

$599
Subtotal

Similar products

Other products people compare with this one.

Pentair 072927Z WhisperFlo diffuser assembly for WFE-3 to WFE-8 pumps Pentair WhisperFlo Diffuser, .5 HP to 2 HP, WFE-3-8, 072927Z$7999 Pentair 400011Z diffuser for the 5 HP WhisperFlo XF pump Pentair WhisperFlo XF 5 HP Diffuser, 400011Z$11899 Pentair 356156Z diffuser for the 3HP IntelliFlo3 pool pump Pentair Diffuser for 3HP IntelliFlo3 Pool Pump, 356156Z$5699 Pentair 356238Z IntelliFlo 3.0 Energy Star diffuser assembly Pentair IntelliFlo 3.0 Energy Star Diffuser Assembly, 356238Z$9499 Pentair 073131Z 3 hp impeller for WhisperFlo WFE-12 and IntelliFlo pumps Pentair Impeller for IntelliFlo and WhisperFlo 3 HP WFE-12, 073131Z$9099 Pentair 073130Z impeller for 2 and 2.5 HP WhisperFlo pool pumps Pentair WhisperFlo Impeller, 2 and 2.5 HP (WF-8 & 30, WFDS-8 & 30, WFE-30, WFK-8), 073130Z$9499 Pentair 073128Z 1000 Series impeller for WhisperFlo WFE-4, WF-4, WF-26 and FE-26 pumps Pentair 1 & 1.5 HP WhisperFlo Impeller, 073128Z$9099 Pentair 073129Z 1000 Series WhisperFlo pump impeller Pentair 1.5 HP WhisperFlo Impeller, 073129Z$9399 Pentair 356155Z diffuser for the IntelliFlo3 VSF 1.5 HP pool pump Pentair Diffuser for IntelliFlo3 VSF 1.5 HP Pump, 356155Z$5699 Pentair 070795 clear Lexan pump lid for WhisperFlo and Aquatron metal clamp style pumps Pentair Lexan Cover for WhisperFlo and Aquatron, Older Metal Clamp Style, 070795$5399
Pentair 400006 WhisperFlo XF lid and locking ring assembly Pentair WhisperFlo XF Lid and Locking Ring, 400006$5999 Pentair 073127Z WhisperFlo impeller for .75 and 1 HP pumps Pentair WhisperFlo Impeller .75 and 1 HP (WF-3 & 24, WFE-24), 073127Z$9799 Pentair 074564Z WhisperFlo almond seal plate Pentair WhisperFlo Almond Seal Plate, 074564Z$11099 Pentair 073126Z 1/2 HP impeller for the WhisperFlo WFE-2 pump Pentair 1/2 HP Impeller for WhisperFlo WFE-2, 073126Z$9399 Pentair 070711 stainless steel clamp band assembly for WhisperFlo pump Pentair WhisperFlo Clamp Band Assembly, Stainless, 070711$8799 Pentair 356091Z replacement seal plate in almond for the 3HP IntelliFlo3 pool pump Pentair Replacement Seal Plate in Almond for 3HP IntelliFlo3 Pool Pump, 356091Z$10099 Pentair 357199Z almond Cam and Ramp strainer lid clamp for WhisperFlo and IntelliFlo pumps Pentair Cam and Ramp Strainer Lid Clamp, Almond, for WhisperFlo and IntelliFlo Pumps, 357199Z$5299 Pentair 410029 3 in. union kit for the 3 HP IntelliFlo3 pool pump Pentair 3" Union Kit for 3 HP IntelliFlo3 Pool Pump, 410029$6099 Pentair 410028Z 2 in. and 2.5 in. union kit for the 3 HP IntelliFlo3 pool pump Pentair 2 in. and 2.5 in. Union Kit for 3 HP IntelliFlo3 Pool Pump, 410028Z$5299 Pentair 356237Z IntelliFlo 3.0 Energy Star impeller assembly Pentair IntelliFlo 3.0 Energy Star Impeller Assembly, 356237Z$10099

Product details

The Pentair 400010Z is the XF series pump diffuser, listed for the WhisperFloXF and IntelliFloXF variable speed pumps and for Sta-Rite 2 and 3 HP pumps. It is the genuine Pentair replacement.

What the diffuser does

The impeller throws water outward at speed. The diffuser sits over it and converts that velocity into pressure, funneling flow into the volute and out the discharge. It also sets the close running clearance around the impeller eye. When that clearance opens up, or the diffuser body cracks, water simply circulates inside the pump instead of leaving it, and the pump loses head while still sounding perfectly normal.

Fitting

Reaching the diffuser means opening the wet end, which is the right moment to look at everything else in there. Check the diffuser o-ring, the shaft seal and the impeller for wear before reassembly, and replace anything questionable while the pump is apart.

Specifications
Brand Pentair
Manufacturer part number 400010Z
UPC 788379807672
Type Pump diffuser
Series XF series
Rating 3 HP
Fits Pentair WhisperFloXF, Pentair IntelliFloXF variable speed, Sta-Rite 2 and 3 HP pumps
Shipping weight 0.9 lb
Ships Parcel

Request a quote

Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.

Request a quote

From Pentair

Your trusted source for all things pool. Pentair

Pentair equipment

Pentair SuperFlo VS 1.5 HP Variable Speed Pool Pump, EC-342001 Pentair MasterTemp 400 Natural Gas Pool Heater, EC-462028 Pentair Clean & Clear Plus 420 sq ft Cartridge Pool Filter, EC-160301 Pentair IntelliConnect Control & Monitoring System with Wi-Fi, EC-523317
Shop Pentair equipment

Genuine Pentair parts

Pentair Genuine OEM Seal Kit for WhisperFlo and IntelliFlo Pool Pumps, 356198 Pentair Genuine OEM High Flow Manual Air Relief Valve, 98209800 Pentair Genuine OEM FNS Plus Element Assembly Complete, 48 Sq Ft, 59023400 Pentair Genuine OEM MasterTemp/Max-E-Therm 6-Button Control Board Kit, 461105Z
Shop Pentair parts
Pool lighting: a backyard pool and spa lit in blue and green at nightPool water treatment: three people floating on rings in clear blue water, seen from abovePool cleaners: a toddler in flower sunglasses laughing in a yellow ring, held by her mother
Pentair makes pumps, filters, heaters, salt chlorinators, cleaners, lighting and automation for pools and spas.Shop all Pentair

Customer reviews

More from Pentair

Pentair SuperFlo VS EC-342001 1.5 HP variable speed pool pump, front view Pentair SuperFlo VS 1.5 HP Variable Speed Pool Pump, EC-342001$1,48900 Pentair SuperFlo EC-348190 single speed pool pump, 1 HP, 115/230V Pentair SuperFlo 1 HP Single Speed Pool Pump, 115/230V, EC-348190$74800 Pentair WhisperFlo VS EC-011533 2.6 THP variable speed pool pump, top view Pentair WhisperFlo VS 2.6 THP Variable Speed Pool Pump, 115/208-230V, EC-011533$1,79900 Pentair 262506 HiFlow 1.5 in. six way clamp style multiport valve Pentair Genuine OEM HiFlow Valve 1.5 in. 6-Way Clamp Style, 262506$20399 Pentair EC-520556 IntelliChlor 110/220V power center Pentair 110/220V IntelliChlor Salt Chlorine Generator Power Center, EC-520556$79900 Web Price Pentair 523769 IntelliChlor Plus and LT replacement sensor board Pentair IntelliChlor Plus and LT Replacement Sensor Board, 523769$39299 Pentair 350305S 3.2 kW 10 pole variable speed motor for IntelliFloXF and IntelliFlo 2 VST pumps Pentair 3.2 kW IntelliFloXF VSF, VSF, VS+SVRS, i1, i2 Motor, 350305S$78199 Pentair 523735-EC IntelliChlor Plus40 salt chlorine generator cell Pentair IntelliChlor Plus40 Salt Chlorine Generator Replacement Cell, 40,000 Gallons, 523735-EC$1,81900 Web Price Pentair Rainbow 320 in-line chlorinator R171096, front view Pentair Rainbow 320 In-Line Chlorinator, R171096$14499 Pentair 190003 tank clamp kit with tension control for Clean and Clear Plus, FNS Plus and Quad DE filters Pentair Genuine OEM Clamp Kit with Tension Control, 190003$30199
Pentair IntelliChlor LT25 salt chlorine generator cell 523747-EC Pentair IntelliChlor LT25 Salt Chlorine Generator Cell, 25,000 Gallons, 523747-EC$1,14900 Pentair IntelliFlo VS+SVRS variable speed pool pump, EC-011057 Pentair IntelliFlo VS+SVRS Variable Speed Pool Pump, EC-011057$2,39900 Pentair 170145 cartridge pack for Sta-Rite System 3 S7M120, inner and outer cartridges Sta-Rite 170145 System 3 S7M120 Large and Small Cartridge Set, 25021-0200S and 25022-0201S$46499 Pentair 261055 SM-20-3 2 in. side mount multiport valve kit, front view Pentair 2 in. Multiport Valve Kit for Side Mount Sand Filters, SM-20-3, 261055$29999 Pentair 523770 IntelliChlor Plus replacement controller (HMI), black Pentair IntelliChlor Plus Controller Replacement (HMI), Black, 523770$38399 Pentair 261152 SM20-2 2 in. side mount multiport valve kit for DE filters Pentair 2" Valve Kit Multiport, Side Mount DE Filters SM20-2, 261152$29799 Pentair 357149 WhisperFlo and IntelliFlo volute housing replacement kit, front view Pentair WhisperFlo and IntelliFlo Volute Housing Replacement Kit, 357149$28799 Pentair MicroBrite Color LED pool light EC-620425, 12 volt, 14 watt, with 100 ft cord Pentair MicroBrite Color LED Pool Light 12 Volt, 14 Watt with 100' Cord, EC-620425$61900 Pentair 59023400 FNS Plus 48 sq ft complete DE grid assembly Pentair Genuine OEM FNS Plus Element Assembly Complete, 48 Sq Ft, 59023400$39399 Pentair Amerlite EC-602128 500W 120V inground pool light with stainless steel facering Pentair Amerlite Pool Light for Inground Pools with Stainless Steel Facering, 500W 120V 50' Cord, EC-602128$43900 Web Price

Questions and answers

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

Which pumps take this diffuser?
It is the Pentair XF series diffuser, listed for WhisperFloXF, IntelliFloXF variable speed and Sta-Rite 2 and 3 HP pumps.
Is this a genuine Pentair part?
Yes. It is Pentair part number 400010Z, the factory diffuser.
How do I know the diffuser is the problem?
A pump that primes and runs but moves less water than it used to, with no clogged basket and no suction leak, often has a cracked diffuser or a worn diffuser to impeller fit.
What else should I replace while I am in there?
The wet end has to come apart to reach the diffuser, so inspect the diffuser o-ring, the shaft seal and the impeller before you close it up.
Ask your own question