SuperFlo 1 HP Single Speed Pump - 340038


Part # 340038

By Pentair Pool Products

  4.86 Average  



Part # 340038

Warranty 1 Year (See Pentair Warranty Card)

Alternate Part #'s PAC-10-0038, PEN340038

Product Description

Inyo Recommended Pumps

The SuperFlo™ Pump is specifically designed to be the best available product for a variety of inground pool applications. SuperFlo features thick walled body parts, a heavy-duty 56 square flange motor along with highly engineered hydraulics. This pump also comes equipped with a silent running capability and small footprint allowing it to easily drop into a compact equipment pad. The SuperFlo pump is the result of more than 40 years of innovative hydraulic engineering. All in all, it will provide your pool system the ability to move more water more efficiently for lower operating cost and quieter operation. Plus, by performing with less effort, there is simply less wear and tear which, means longer life for a higher return on your pump investment.


  • Extremely quiet operation.
  • Unionized fittings (1.5" internal slip and 2" external slip).
  • Cam and Ram lid locks in place with a quarter-turn.
  • See-through lid permits easy inspection of strainer basket.
  • Heavy-duty, high service factor 56 square flange motor.
  • Integral volute and pot reduce hydraulic noise.
  • SuperFlo is a direct replacement for the Hayward Super Pump.

    Product Specs:
  • Horsepower- 1 HP
  • Voltage- 115/230V (60Hz)
  • Single-phase- Single-speed


Super Flo Dimensions

Product Specifications

1 HP
115/208-230 V
Union Connectors:
1.5 - 2 in.
Port Size:
1.5 in.
Service Factor:

?     Asked on 9/25/2020 by Richard Warner

I currently have an older 340038. Can I replace with a 340042? Or, if I were to replace with VS do I bypass the existing timer?

A  Answered on 12/16/2020 by InyoPools Product Specialist Hector F.

Hi Richard, you can replace this pump with the dual or variable versions and do not need to bypass the timer. 

?     Asked on 9/6/2020 by James L. Steward

Can a Pentair SF-N1-1A / 340038 SuperFlo single speed be wired 110v or 220v

A  Answered on 12/18/2020 by InyoPools Product Specialist Hector F.

Hi James, yes this Pentair Superflo is dual voltage so can be wired for either 110/120 - 220/240 volts.

?     Asked on 8/17/2020 by Paul Durand

I have a Pentair superflo pump with part number 350097. The motor is a Century USQ1102. I'm hoping to replace without having to change electrical or move plumbing. I have pictures for your reference. Please let me know if this is what I need or if i need something else. Many thanks!


A  Answered on 8/17/2020 by InyoPools Product Specialist Lennox H.

Hi, Paul. Yes, this SuperFlo 1.0 HP Single Speed Pump - 340038 is the correct direct replacement. 

?     Asked on 5/20/2020 by andy

How do u drain this pump for winterizing? i dont see any drain plugs?

A  Answered on 12/4/2020 by InyoPools Product Specialist Hector F.

Hi Andy, you can drain this pump by removing the drain plugs seen on key 11 on this parts diagram

?     Asked on 4/26/2020 by Shelly

I currently have an AO Smith K28L2N105 motor that stopped working. Would this be a compatible replacement?


A  Answered on 4/27/2020 by InyoPools Product Specialist Patrick P.

Hi Shelly, The true HP of your pump in the photo is 1.65 HP so we would suggest the 1.5 HP Super Flo Pump as a suitable replacement

  • Commented on 4/29/2020 by Product Owner

    I realize this pump may not be CA compliant since I live in CA. If I have to get a VS pump replacement, which one would you recommend? My pool guy quoted me about $1600 for VS pump with installation and 2 year warranty, and I'm not sure what's the average cost of getting it replaced. It doesn't look hard to do self-installation, but I'm not sure how long the pump would last without the warranty.

    • Commented on 4/30/2020 by InyoPools Product Specialist Patrick P.

      Hi Shelly We would suggest this 1.65 HP V Green Variable Speed Replacement Motor we also suggest a seal kit when replacing your motor. Could you send a photo of a wide shot of your complete pump showing the pipes going in and out of the pump, this will allow us to suggest the proper seal kit. Simply click the reply link below to upload your photos.

      • Commented on 4/30/2020 by Product Owner

        This is only the motor? Not sure if the pump needs replacing. Here's a picture of my complete pool pump.


?     Asked on 2/4/2020 by Jeff

I have a Pentair 1 hp 340038 pump, advertised as single-speed. Yet the chart supplied in the manual concerning head shows two speeds, 1725 and 3450. I'm trying to determine dynamic head for my system and need to know what the pump is putting out. The pump can be wired for either 110 or 220 volts. I'm wired for 220 volts. Is the rpm dependent on the voltage? If not, what is the actual rpm? I've searched everywhere with no luck determining actual rpm.

A  Answered on 2/5/2020 by InyoPools Product Specialist Lennox H.

Hi, Jeff. The RPM of your model pump is 3450. 

?     Asked on 8/12/2019 by

is this pump for above ground pools

A  Answered on 8/13/2019 by InyoPools Product Specialist Michelle B.

Hello, This pump is recommended for in ground pools.

?     Asked on 4/17/2019 by Dan Whalen

Just had pool opened for season. After being open for about 24hrs noticed pump making loud whining noise. When I checked it out the diverter valve was closed. Could this have affected the pump? I currently have a Pentair Model SF-N1-1A/340038. I have noticed on your website you recommend a different replacement. Is this a better pump,quieter? Does this pipe up and wire up the same as Pentair 340038?

A  Answered on 4/18/2019 by InyoPools Product Specialist Lennox H.

Hi, Dan. The pump operating with restricted water flow can damage the pump. The Pureline PureFlow pump is a less costly option. It's about the same sound level depending on how the pump is plumbed. It can be wired for 115/230 volts and the inlet plumbing port of the Pure Flow is slightly higher than this SuperFlo pump. 

?     Asked on 4/16/2019 by JG

I have this pump currently, for a 30,000 gal (guess) pool. 20 x 40 x 8 (3 at shallow). I have two skimmer inlets. There does not seem to be a lot of suction in the skimmer baskets. Is this normal? I do not have any leakage and the output back to the pool seems strong. Should I be concerned? The skimmers do not seem to collect much top debris...

A  Answered on 4/27/2019 by InyoPools Product Specialist Lennox H.

Hi, JG. This is normal since you have two skimmers and a main drain based on the type of pump you have.

?     Asked on 3/31/2019 by Jayne

I have an A.O. Smith B2841 1 HP that I need to replace. Is the Pentair 340038 SuperFlo 1 hp a compatible replacement? Thanks.

A  Answered on 4/2/2019 by InyoPools Product Specialist Hector F.

Technically, if you would like to replace the entire pump with matching motor specs as far as the strength then the model Superflo would be the 340039

?     Asked on 1/27/2019 by Matt

I have a Super Flow from around 2004. What is the replacement pump for 1 HP Super flow ?

A  Answered on 1/28/2019 by InyoPools Product Specialist Lennox H.

Hi, Matt. If you have the Pentair SuperFlo Pump, this is the correct replacement. 

?     Asked on 5/22/2018 by

What size fitting will fiT a pentaie pump motor filtering outlets one on top one on front side model P/N 340038

A  Answered on 5/22/2018 by InyoPools Product Specialist Hector F.

This pump has 1.5-inch ports internal thread and also comes with unions that can be used for 1.5 or 2-inch plumbing. 

?     Asked on 12/21/2017 by Jacqueline Anderson

does this pump have a mfg warranty ???? I was told that on the box is says no warranty.

A  Answered on 12/22/2017 by InyoPools Product Specialist Kevin G.

This has a 1-year manufacturer warranty.  

?     Asked on 7/20/2017 by dl

i have a Pentair 342854 pump, which seems to be sucking air in the housing somewhere. what is the best replacement- where major plumbing change will not be required?

A  Answered on 7/20/2017 by InyoPools Product Specialist Hector F.

There are a number of causes for a pool pump to pull in air. Please view our article and guide on "How to Identify and Correct Air Leaks" for some guidance. Also if you click here you can see the parts diagram for your pump. There is the GOKIT24 which replaces all seals and gaskets for the Pinnacle. 

?     Asked on 5/28/2017 by Shelley Murray

I have this Superflo 1 HP single speed pump and was looking for just the motor parrt. Do you have motors only. Thanks Shelley

A  Answered on 5/28/2017 by InyoPools Product Specialist Hector F.

Yes, that motor part number is the B853 on this parts diagram. Please keep in mind that if the motor hs been changed since the original then you want to cross reference that motor based off of its specific model, part or catalog number that should be on its label.

?     Asked on 2/13/2017 by Joaquin Ortiz


A  Answered on 2/13/2017 by InyoPools Product Specialist Alan M.

Here is a link to the Pentair Superflo high performance pump brochure. It includes a chart for the performance curve indicating the GMP information you requested.

?     Asked on 7/18/2016 by

How many watts is this pump? Need to know for solar panels. Thanks, Tim

A  Answered on 7/22/2016 by InyoPools Product Specialist Lennox H.

Hi, This pump uses 1,633 kW.

?     Asked on 5/11/2016 by

Does this pump actually use an AO Smith motor? I have not had luck with AO Smith motors lasting more than 6 years or so....

A  Answered on 5/11/2016 by InyoPools Product Specialist Hector F.

Yes these pumps for sure use A.O. Smith motors.

?     Asked on 7/8/2015 by Pete

What is the Superflo suction and discharge height differences with the Intelliflo VF and it there an adapter or way to replumb this accordingly?

A  Answered on 7/11/2015 by InyoPools Product Specialist Patrick P.

Hi Pete, Here are the Superflo Suction & Discharge Dimensions Vs. the Intelliflo VF Suction & Discharge Dimensions. There is not an adapter kit specifically for going from the Superflo to the Intelliflo you would just need to re-plumb using standard plumbing supplies. If you want to got to variable speed and not re-plumb then you might consider the Superflo Variable Speed Pump.

?     Asked on 6/4/2015 by natalie

pentair part- 340038 , leaking between motor and pump, what would i need to correct this ? thanks

A  Answered on 6/4/2015 by InyoPools Product Specialist Patrick P.

Hi Natalie, I would suggest a Super Flo Shaft Seal, Super Flo Body O-Ring and a Super Flo Diffuser Seal. The changing of these 3 items should stop your leak.

?     Asked on 4/28/2015 by Fred

I have a Pentair 340038. Motor sounds bad. What would you recommend to replace motor and other seals needed? 110v. 2 speed with timer would be great.

A  Answered on 4/29/2015 by InyoPools Product Specialist Robert M.

Hello Fred - The correct 2-speed replacement is model B2981T. This is a 3/4HP full rated motor but the total HP is the same as your current motor (1.25). The shaft seal, housing o-ring, and diffuser o-ring should be replaced as well.

?     Asked on 4/25/2015 by Dan Whalen

I have a Pentair pump part # 340038 with a date of 2008, should a new Pentair hook up to existing plumbing? My existing pump just last night got really noisy, almost a whining sound. Is this an indication pump is going out?

A  Answered on 4/25/2015 by InyoPools Product Specialist Alex V.

Dan, The pump should line up the same way as your existing Pentair SuperFlo. It sounds like the motor is failing/has failed. You can also consider replacing the motor and seals.

?     Asked on 3/29/2015 by Ron

Hi I am looking to replace my inground pool pump with a Pentair Superflow Single Spd Motor - Pretty Sure i need a 1 Hp Model (vs. 3/4 hp) but wanted to get your thoughts - 24000 Gal Pool; 1.5" PVC Piping; Need about 51 GPM to tunrover in 8 hrs From what I read maximum from 1.5" pvc is about 53 GPM Estimated Total Dynamic Head - 50 Feet I want to make sure I have enough hp but not too much to risk cavitation can you let me know your thoughts?

A  Answered on 3/30/2015 by InyoPools Product Specialist Robert M.

Hello Ron - Based on all of your variables, we would recommend the 1HP Pentair SuperFlo.

?     Asked on 9/17/2014 by Guest

What kind of a warranty comes with this pump? Is it parts and labor?

A  Answered on 9/17/2014 by InyoPools Product Specialist Patrick P.

Pentair pump model # 340038, the pump assembly comes with a 1 year manufacture warranty directly from Pentair, which may be viewed or purchased here The owners manual for the pump may be viewed here


Review Summary

 (Average 4.86  out of 5 stars)
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