Xtreme Biofilters

DA1800 Xtreme Diffuser Assembly

  • DA1800 Xtreme Diffuser Assembly Only
  • Fits Hayward Top Mount Sand Filter (S180T). Clamp Type with 8 inch opening. ( 8 inch outside diameter, 7 inch inside diameter)
  • Hayward 6-way vari-flow Multi-port valve (Filter, Backwash, Rinse, Re-circulate, Waste, Closed)
  • Standard 1.5 intake/output ports. Upgrade to 2 inch valve is available.
  • Max pressure 30 psi/ Max flow rate 5,500 gph ((up to 9000 gph with 2.0 inch valve)
  • Pressure gauge and sight glass
  • Diffuser head/column delivers cyclonic cleaning action
  • Equalizer column equalizes pressure at top and mid section of tank during backwash therefore no packing at top.
  • pump flow rate and pressure must be 3500-4500 gallons per hour @ 20ft 55 ft of head for filter to work properly. Standard 3/4 HP, standard speed (3450 rpm) pump is recommended.


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    Item #Description Price


    • DA1800 Xtreme Diffuser Assembly - 1.5 In
    475.00 Add to cart


    • DA1800T2 Xtreme Diffuser Assembly - 2.0
    575.00 Add to cart