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Perflex Extended-Cycle DE Filter 25 Sq.Ft. (with Clamp) (Open Line)

Hayward

SKU: W3EC50AC

Perflex extended-cycle diatomaceous earth (DE) filters provide superior water clarity and extended filter cleaning cycles without requiring backwashing.

Features

Perflex Extended-Cycle DE filters provide crystal clear, sparkling water at an economical price. Proven over many years, Perflex has set the standard in swimming pool filtration by incorporating the patented Flex-Tube™ design in combination with DE, the most effective filter media available. The result is superior water clarity, extended filter cleaning cycles — and no backwashing required.

Features and Benefits

  • Easy access clamp assembly
  • Cleans pools fast — removes even the smallest particles the first time through
  • Uses DE (diatomaceous earth), the most effective filter media available
  • Patented Flex-Tube system efficiently reuses DE powder and dirt mixture to form fresh cleaning surfaces
  • Exclusive bump handle activates the Flex-Tubes, causing them to instantly purge themselves of dirt and powder
  • Uniquely designed to expel any air that may be present in the system through the filtered water returning to the pool
  • Combination diffuser and lower mixing chamber specifically designed to produce a uniformed coating of DE on the Flex-Tubes
Brand Hayward
Cartridge No
Channel Open Line
Design Flow Rate 50
Effective Filtration Area 25 ft.²
Filter Type DE
GTIN 610377386999
Warranty - Labor None
Master Carton Qty 1
Pallet Qty 12
Warranty - Parts 1-year
Pool Type Above Ground, In Ground
Pressure Gauge No
Product Dimensions 31.375 " x 16 " x 16 "
Product Height 31.375 in
Product Length 16 in
Product Weight 30 lb
Product Width 16 in
Public Design Flow Rate 50 GPM
Residential Design Flow Rate 50
Series Filters Perflex
Shipping Dimensions 32.5 " x 16.2 " x 19.9 "
Shipping Weight 32 lb
Turnover - 10 Hours 30,000 GPM
Turnover - 8 Hours 24,000 GPM
Number of Filter Elements 1
Valve Included N/A
D.E. Capacity 5 lbs.
Parts Details

Click on the part number in the diagram to display the details.

Questions & Answers

6 answered question(s)

06/24/26

Q: Do you need to loosen the clamps on first install

A:
Hi, give our Tech Support Group a call for help with this issue 908-355-7995

By Hayward Support

06/24/26

Q: I purchased a Hayward W3EC50AC Perflex Diatomaceous Earth Pool Filter last year and when I went to open it all the screws that hold the fingers on the rubber cover all rusted and the heads of screws snapped off. They all need to be replaced. Is this under warranty?

A:
Hi, someone from our Technical Service Department will contact you via email.

By Hayward Support

06/24/26

Q: Is this filter adequate for a 17,000 gallon above ground pool?

A:
It should be, but filtration needs vary by location and bather load. Contact a local Hayward Authorized Dealer for help in deciding the correct filter for your pool. You can find a list of them by clicking on the Dealer Locator tab on the home page of...

By Hayward Support

06/24/26

Q: Is the plastic type clamp on my brand new perflex extended cycle DE filtration system EC50AC already factory set at 100 inch -pounds

A:
Hi, any portion of your filter that is pre-assembled will be assembled to factory specs.

By Hayward Support

06/24/26

Q: Do the inlet/outlet ports on this model match the exact dimensions of the previous EC50AC? Asking because the current setup is using fixed plumbing

A:
Yes they should line up.

By Hayward Support

06/24/26

Q: Hello I want to replace my EC50AC with the newest comparable model, what model would that be? Also is the spring circular tension clamp now replaced with this wider angular clamp I'm seeing on here? If not what's the difference. Thanks!

A:
Hi, the EC50AC is still available for purchase. We do not sell direct, but you can find a list of Hayward Authorized Dealers in your area by clicking on the Dealer Locator tab on the home page of our website Hayward.com

By Hayward Support