Hayward 40 sq. ft. Perplex Extended-Cycle D.E. In-Ground Pool Filter, W3EC75A

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

Pool Filter Feature

  • Bump handle activates the mechanism causing the Flex-Tubes to instantly and uniformly clean themselves of dirt and DE filter media
  • The proven patented filter elements that efficiently reuse the DE filter media and dirt mixture forming a fresh filtering surface
  • Heavy duty filter tank is injection-molded of high strength polymer for dependable, corrosion-free performance
  • Self venting - as filtered water is returned to the pool, Perflex filters automatically expel any air that may be present in the system
  • Combination pressure gauge and threaded inspection/service port are easy to read and remove when filter needs cleaning
  • Mixing chamber engineered to produce a uniform, high velocity mixing of the DE filter media and dirt that is removed from the Flex-Tubes by "Bumping"
  • Integral check valve automatically prevents system backflow whenever the pump is off
  • Clean pools fast, removing particles as small as two microns the first time through.
  • Patented Flex-Tube design gives longer cycles between cleaning because the same D.E. filter powder is used over and over
  • Unique bump mechanism allows DE flex tubes to instantly and uniformly clean themselves of dirt and DE filter media


Application For in-ground pools of all types and sizes
Brand Hayward
FilterElement Dacron Flex-Tubes (120)
FilterTank Injection-Molded Polymer
FiltrationArea 40 sq-ft
FlowRate 100 gpm
ItemName Hayward Perflex(R) DE Filter
SubBrand Perflex(R)
Turnover 48000 gal at 8 hrs, 60000 gal at 10 hrs
Type Above Ground Pool Filters
ValveFastening Stainless Steel