By Hayward Pool Products



Model # W3EC50AC

Warranty 1 Year

Dimensions 18x16x33 32 LBS

Alternate Part #'s HAYW3EC50AC

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:
50 GPM
Filtration Area:
25 sq. ft.
Turnover 8 Hrs.:
24000 gal.
Turnover 10 Hrs.:
30000 gal.

?     Asked on 8/4/2007by 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 http://www.inyopools.com/Products/07501352023400.htm 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.

?     Asked on 5/13/2015by Roberto

Do you recommend this filter for 1Hp. Motor, 18,000 gallons in ground pool. Replacing my old Hayward DE gilter.

A  Answered on 5/13/2015 by InyoPools Product Specialist Andy O.

Roberto- I would not recommend this filter for your pool. Your pump is, more than likely, too strong for you to use the Perflex DE Filter EC50AC. I would recommend the EC75A. It has a higher flow rating (100 gpm).

?     Asked on 6/15/2015by Inyo Visitor

If my pump is pushing 75 GPM, would the es50ac be able to handle it?

A  Answered on 6/15/2015 by InyoPools Product Specialist Brian M.

AN EC50AC has a maximum suggest gallon per minute flow rating of 50. For that size pump, I would suggest an EC75A wich is rated at 80GPM.

?     Asked on 5/22/2016by Inyo Visitor

we need the diaphragm or gasket that holds pressure in filter when you bump it

A  Answered on 5/28/2016 by InyoPools Product Specialist Alex V.

Hello, You can find the diaphragm gasket for the EC50AC here: http://www.inyopools.com/Products/07501352018080.htm

?     Asked on 6/9/2016by mike

What would cause the pump to blow algae back into the pool after it has been shut off for a while and then turned back on?

A  Answered on 6/18/2016 by InyoPools Product Specialist Alex V.

Mike, I would recommend inspecting the large gasket, d.e. fingers and the gaskets on the bump shaft assembly.


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