Perflex DE Filter 40 Sq. Ft. - EC75A



Part # EC75A

By Hayward Pool Products



Part # EC75A

Warranty 1 Year

Product Description

Perflex Extended-Cycle D.E. filters clean pools fast, removing particles as small as one micron the first time through. Its patented Flex-Tube™ design gives longer cycles between cleaning because the same D.E. filter powder is used over and over. Plus, Perflex cleans without backwashing, saving hundreds of gallons of treated pool water. An exceptional value as a replacement filter or for new pool installations. For sparkling, clean pools, step up to Perflex.


  • In-ground pools of all types and sizes


  • Exclusive bump handle activates the mechanism causing the Flex-Tubes to instantly and uniformly clean themselves of dirt and filter powder
  • Self-venting design automatically expels any air that may be present in the system
  • Proven, patented Flex-Tube filter elements efficiently reuse the filter powder and dirt mixture forming a fresh filtering surface
  • Combination pressure gauge and threaded inspection/service port is easy to read and remove when filter needs cleaning
  • Heavy-duty filter tank injection-molded of high-strength Duralon™ for dependable, corrosion-free performance
  • Integral check valve prevents system backflow whenever pump is off  

Hayward D.E. Filter Systems

 Click here for more Hayward Filters  

Product Specifications

Port Size:
1 1/2 in.
Flow Rating:
100 GPM
Filtration Area:
40 sq. ft.
Turnover 8 Hrs.:
38400 gal.
Turnover 10 Hrs.:
48000 gal.

?     Asked on 8/26/2018 by Valerio P Laya

Is this filter good for 21000 gallons

A     Answered on 8/31/2018 by InyoPools Product Specialist Lennox H.

Hi, Valerio. Yes, this filter can be used to filter a 21,000 gallon pool. 

?     Asked on 7/5/2018 by George

I am trying to decide whether to buy one of these or a comparable pro grid. Hayward states that these filter down to 2 micron as opposed to 5 micron for the pro grids and that they require less maintenance. However, it would seem the pro grid is far more popular. Is there something I'm missing?

A     Answered on 7/6/2018 by InyoPools Product Specialist Lennox H.

Hi, George. The ProGrid is more popular because of the versatile features using the multi-port valve. The Perflex filters although less maintenance is not fun working with. You're not missing anything. 

?     Asked on 4/6/2018 by Matt Belville

Would the PureLine Prime 1.65HP variable speed pump work well with this filter? I purchased the Hayward 1 1/2HP pump and looks like I need to return it for a pump that is 1HP. Pool is 12,500 gal. with 2" piping. Thanks.

A     Answered on 4/9/2018 by InyoPools Product Specialist Megan C.

Yes, the PureLine Prime Variable Speed Pool Pump 1.65 HP - PL2605 or PureLine Prime Variable Speed Pool Pump 1.65 HP W/ Smart Phone Control - PL2615 will operate well with the Perflex DE Filter 40 Sq. Ft. - EC75A. 

?     Asked on 7/1/2017 by Stevew

I have a de7220 15 years young. It does a superb job of polishing my water and only requires backwash 3 times per year. however it is very heavy for me now that I am not as young. It is time to replace the equipment. Would the Perflex be an upgrade? Would it be lighter to lift the filter assembly out to clean. I was even thinking about two filters in series a sand pre-filter and then a DE to polish the water. Your advice would be appreciated. $ are not a problem. only weight and cycle time.

A     Answered on 7/4/2017 by InyoPools Product Specialist Lennox H.

Hi. The Perflex will not be an upgrade but a downgrade from what you currently have. The tube assembly would be lighter to take in and out. Unfortunately,  you can not use a pre-filter with a DE filter due to the filter aid that is required. I would recommend staying with the DE7220 to keep the level of filtration.

?     Asked on 6/6/2017 by palle kanstrup

is the shipping free for a new filter, to st. Thomas,U.S.V.I.

A     Answered on 6/6/2017 by InyoPools Product Specialist Lennox H.

Hi, Palle. We're unable to ship this item direct to ST. Thomas USVI. You will have to have this item shipped via a freight carrier.

?     Asked on 4/27/2017 by o.lrodgers

need to know the demicions

A     Answered on 4/27/2017 by InyoPools Product Specialist Lennox H.

Hi. The width of the filter is 21 inches and the height is 31 inches.

?     Asked on 4/21/2017 by

Is there a video of how to take apart and clean the filter for the EC75A.

A     Answered on 4/21/2017 by InyoPools Product Specialist Scott W.

Unfortunately, we do not have a video for that particular filter model.

?     Asked on 4/18/2017 by June

Can a multi-port valve be installed when using the EC75A for water waste?

A     Answered on 4/19/2017 by InyoPools Product Specialist Lennox H.

Hi, June. The Hayward Perflex filters are not designed to use a multiport valve.

?     Asked on 2/14/2017 by Stu

Would you ship to Australia, if so how much to ship to Albury, NSW, AU, and how fast? Would probably need to be airfreight, we can't wait for sea. Thanks.

A     Answered on 2/15/2017 by InyoPools Product Specialist Scott W.

Yes, we would be able to ship to Australia. It would be shipped UPS Worldwide, the shipping charge would be about $475, and would be a 2-3 week lead time.

?     Asked on 9/15/2016 by Will

Will a 2hp pump harm my EC75a filter?

A     Answered on 9/16/2016 by InyoPools Product Specialist Stacey M.

Hello Will, you would only want a 1HP with this EC75a.

?     Asked on 9/8/2016 by

Will a 1 1/2 HP hayward match with this filter?

A     Answered on 9/8/2016 by InyoPools Product Specialist Stacey M.

Hello, you would want a 1HP with a EC75A

?     Asked on 6/25/2016 by ED

My Tank has developed a small crack. Can I buy just the tank?

A     Answered on 6/25/2016 by InyoPools Product Specialist Scott W.

Yes that's possible. The part number for the tank is 4820-10C.

?     Asked on 6/8/2016 by

How do i make the main drain work?

A     Answered on 6/14/2016 by InyoPools Product Specialist Lennox H.

Hi, You will need to adjust the diverter valve that regulates the water flow between the main drain and skimmer.

?     Asked on 5/22/2016 by John

What is the difference between an ec-65 and an ec-65A filter. Are all hook ups the same?

A     Answered on 5/22/2016 by InyoPools Product Specialist Alex V.

John, The EC65 and the EC65A are the same (size and connection).

?     Asked on 2/6/2016 by

Our 18x36 inground pool has a ec65-de filter, would the perflex de filter 40 sq.ft. be a proper replacement. are the pipe sizes the same etc.

A     Answered on 2/8/2016 by InyoPools Product Specialist Lennox H.

Hi, The Perflex DE Filter 40 Sq. Ft. (EC75A) will replace the EC65 and the pipe size and set up will be the same.

?     Asked on 9/18/2015 by Clarence Cunningham

ec75model.Are the rods that are inside the fingers a needed item?

A     Answered on 9/22/2015 by InyoPools Product Specialist Lennox H.

Hi Clarence, The rod is needed to ensure that the filter operates as intended.

?     Asked on 7/26/2015 by Rick

Hi, My Hayward EC65A filter came with a 1 HP pump motor and i was thinking of replacing it with a 1-1/2 motor to increase the flow rate is this advisable ? Thank You

A     Answered on 7/27/2015 by InyoPools Product Specialist Lennox H.

Hi Rick, Increasing the motor to 1-1/2" hp will work but reduce the efficiency of the filter ability.

?     Asked on 6/26/2015 by Frank

I have a EC75A pool is 24X15 approx 10,000 gals. Question how many pounds of DE is needed for a start up thanks

A     Answered on 6/27/2015 by InyoPools Product Specialist Hector F.

This filter model takes 7 lbs. of d.e. powder upon start up.

?     Asked on 6/14/2015 by steve

Is there a way to clean the fingers or do they just need to replaced. I'm losing pressure after about 15 secs and thinking the fingers are clogged.

A     Answered on 6/17/2015 by InyoPools Product Specialist Lennox H.

Steve, You can use the Filter Clean 1Qt to clean the fingers. Let it soak in the solution for at least 1-3 hours depending on how bad it is. After cleaning it if you're still having this problem you will have to replace the fingers.

?     Asked on 5/3/2015 by Sal

whats the difference between the ec65 and ec75 need a new filter want to up grade to the ec75

A     Answered on 5/3/2015 by InyoPools Product Specialist Patrick P.

The main difference between the Hayward EC65A and EC75A is the effective filtration area. The EC75A has a larger filteration area meaning more time between cleaning the DE fingers. Also the EC75A has an increased flow rate over the EC65A (67 Gallons Per Minute Vs. 100 Gallons Per Minute) this increased flow rate will put less resistance on your pump meaning your motor will last longer.

?     Asked on 5/2/2015 by Will

Where is the closest authorized Hayward Warranty Center near Ottawa Ontario Canada?

A     Answered on 5/4/2015 by InyoPools Product Specialist Alex V.

Will, Unfortunately we do not have access to that list. It would be best to contact Hayward at 888-429-9273.

?     Asked on 5/2/2015 by will

Re the warranty for the Perflex de filter. Is there a warranty? If so how long is it? If there is a problem with the filter can I take it to any Hayward dealer in the city where I live (Ottawa Canada) or do I have to ship it back to INYO Pools?

A     Answered on 5/2/2015 by InyoPools Product Specialist Lennox H.

Will, The Perflex DE Filter 40 Sq. Ft. comes with a 1 Year Warranty. Yes, if there an authorized Hayward Warranty Center.

?     Asked on 4/10/2015 by Ray

Does it come with the stand & fixtures to connect to the pump?

A     Answered on 4/10/2015 by InyoPools Product Specialist Lennox H.

Ray, It only comes with the stand and connections when you purchase the system package.

?     Asked on 4/9/2015 by Ray

Does this filter come with all internal parts (tube fingers) etc.?

A     Answered on 4/10/2015 by InyoPools Product Specialist Robert M.

Hello Ray - This is a complete filter and it will come with all of the internal parts.

?     Asked on 10/15/2014 by Guest

Is the tank only available for the ec75a?

A     Answered on 10/15/2014 by InyoPools Product Specialist Patrick P.

This body works on the ec65 and ec65a as well. Here is the parts breakdown for these units as well.

?     Asked on 10/10/2014 by Guest

What is the difference between ec75a & ec75?

A     Answered on 10/10/2014 by InyoPools Product Specialist Patrick P.

The new model number for the EC75 is the EC75A. There is no difference between the two models.

?     Asked on 9/19/2014 by Guest

Can this valve be used on a perplex ec75 for an in ground pool. It says on Hayward's site for above ground pools

A     Answered on 9/19/2014 by InyoPools Product Specialist Patrick P.

Yes this can be used with in ground pools. The Perflex is most commonly (in smaller sizes) used in above ground pools. So I'm sure that's what they were referring to.

?     Asked on 5/2/2013 by Guest

Can this pool filter be used for above ground pools or is it strictly used for in ground pools?

A     Answered on 5/2/2013 by InyoPools Product Specialist Patrick P.

Yes, you can use an EC75 on an above ground. It would be over sized depending on the size of the pool.

?     Asked on 8/4/2007 by Guest

The manual says that a diverter valve can be installed for vacuuming to waste during heavy spring clean up or pulling rain water out of the pool. Where would it be installed? Do you sell this valve?

A     Answered on 8/4/2007 by InyoPools Product Specialist Patrick P.

Yes we do carry this diverter valve which you may view or purchase through this link This valve has 3 ports on it, the valve would screw into the disharge side of your pump and you can have the handle turned so the return water goes through your filter or you can turn the valve in the opposite direction so the dirty water goes to waste and bypasses your filter, this is very helpful when vacuuming or for heavy spring clean up.


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