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ProSeries 18" Sand Filter - Top Mount (VariFlo XL Control Valve Included) (Open Line)

Hayward

SKU: W3S180T

ProSeries™ filters are performance matched with our above-ground pump series to ensure a system that maximizes its filtration ability.

Features

ProSeries high-rate sand filters are molded of durable, corrosion-proof material for long-lasting performance. They feature attractive, unitized tank construction for years of trouble-free operation with only minimal care. ProSeries sets the standard for performance, value and dependability.

Features and Benefits

  • Flange clamp design allows 360° rotation of valve to simplify plumbing
  • Integral top diffuser ensures even distribution of water over the top of the sand media bed. Full-size internal piping provides smooth, free-flowing performance
  • Large pressure sand/water drain for rapid winterizing or servicing
  • Unitized, corrosion-proof filter tank molded of rugged, colorfast polymeric material for dependable, all-weather performance
  • 6- or 7-position Hayward® 2" VariFlo® control valve with easy-to-use lever-action handle lets you dial any of the valve/filter functions. Integral sight glass lets you see when backwash cycle is completed
  • Precision engineered umbrella-fold self cleaning laterals for balanced flow and backwashing, plus easy serviceability
Backwash Flow Rate 35 GPM
Brand Hayward
Cartridge No
Channel Open Line
Design Flow Rate 35
Drain Port Size (Inches) 1.5
Effective Filtration Area 1.75 ft.²
Filter Type Sand
Footprint 18-1/2 x 18-1/2"
GTIN 610377386920
Warranty - Labor None
Master Carton Qty 1
Maximum Working Pressure 50 PSI
Number of Filter Elements N/A
Pallet Qty 8
Warranty - Parts 1-year
Pool Type Above Ground
Pressure Gauge Yes
Product Dimensions 35 " x 18.5 " x 18.5 "
Product Height 35 in
Product Length 18.5 in
Product Weight 32 lb
Product Width 18.5 in
Public Design Flow Rate 35 GPM
Residential Design Flow Rate 35
Sand Capacity 150 lbs.
Series Filters ProSeries
Shipping Dimensions 36.4 " x 20.3 " x 20.3 "
Shipping Weight 29 lb
Side Clearance - Filters 18"
Tank Type Polymeric Resin
Turnover - 10 Hours 21,000 GPM
Turnover - 8 Hours 16,800 GPM
Valve Included 1 1/2" VariFlo
Vertical Clearance - Filters 18"
Parts Details

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

Questions & Answers

5 answered question(s)

06/24/26

Q: I had asked a question on my S180T1580 sand filter assembly control valve Part Number SPX07113. I need to know what the replacement part number is for this control valve assembly because I cannot find this specific part number online.

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

By Hayward Support

06/24/26

Q: What size filter and pump do I need for an above ground pool 18x33x52”deep

A:
Contact a local Hayward Authorized Dealer for further assistance in choosing the right pump and filter for your location. You can find a list of them by clicking on the Dealer Locator tab on the home page of our website Hayward.com

By Hayward Support

06/24/26

Q: What size is the oring of this 18 inch sand filter? Thanks

A:
Hi, the part number for the o-ring is GMX600F. This is the only o-ring we recommend.

By Hayward Support

06/24/26

Q: What size sand filter do I need for an 18 in round pool with a 1.5 pump

A:
Hi, sizing questions should be directed to a local Hayward Authorized Dealer. To find a list of them click on the Dealer Locator tab on the home page of our website Hayward.com.

By Hayward Support

06/24/26

Q: Are connections universal to a 18” sand filter

A:
Hi, our S180T sand filter uses the SP0714T valve that has 1 1/2" connections.

By Hayward Support