Hayward Pro Series Top Mount Sand 16" Tank In Ground Pool Filter, W3S166T

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Hayward W3S166T Pro(TM) Top Mount Sand Filter with Valve; 16 Inch, 1.4 sq-ft, 50 psi

ProSeries™ top-mount sand filters utilize a precision engineered umbrella-fold self-cleaning lateral system to provide efficient flow and evenly distributed water for totally balanced backwashing and long lasting performance. For use in multiple applications, Pro Series will provide clear, sparkling water for years to come.

Pool Filter Features:

  • Durable corrosion proof materials for dependable all weather performance
  • Large pressure sand/water drain for rapid winterizing or servicing
  • Large pressure sand/water drain for rapid winterizing or servicing
  • Integral top diffuser ensures even distribution of water over the entire sand bed for maximum use of the filtration area
  • Exclusive full-flow 360 deg self-cleaning laterals provide energy-efficient operation and thorough backwashing
  • 7-position VariFlo(TM) control valve makes changing filter function quick and easy
  • Corrosion-proof construction
  • Reduced energy costs
  • Easy-access assembly makes service simple


Application For above-ground pools
Brand Hayward
CartonWeight 25 lbs
Filter S166T
FilterControlValve 7-Position, Top-Mount Vari-Flo(TM) Valve with Lever-Action Handle
FilterTank Molded Polymeric
FiltrationArea 1.4 sq-ft
FiltrationRate 30 gpm/sq-ft
FlowRate 30 GPM
ItemName Hayward ProSeries Sand Filter with Valve
MaximumWorkingPressure 50 psi
Media High-rate sand: No. 20 silica sand (.45 mm – .55 mm)
MediaRequired 100 lbs
MountingBase Injection-Molded Thermoplastic
MountingType Top Mount
Size 16 Inch
SubBrand ProSeries
Turnover 14400 gal at 8 hrs, 21600 gal at 12 hrs
Type Above Ground Pool Filters
Underdrain 360 deg Self-Cleaning Slotted Laterals, Precision Installed in Ball-Joint Assembly
ValveFastening Flange Clamp Design




Operational Manual