Granular Media Filter Systems - Gravity Type 

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Rotary Surface and Sub-Surface Washers Add Auxiliary Filter Cleaning

General Filter surface washers provide a high quality low-cost media scour system that uniformly distributes pressurized water over the entire filter bed using spray nozzles attached to rotating arms. Standard construction is red brass with optional stainless steel construction. Works well to retrofit and existing water only wash granular media filter.

Curved brass arm with PVC nozzles

Surface washers and sub-surface washers let you:

  • Scour filter media during backwash
  • Add auxiliary cleaning to new or existing filters
  • Break up mudballs formed on the media surface
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    Features and Benefits

    Features:

    • Hydraulically driven.
    • Media surface scouring
    • Corrosion resistant materials

    Benefits:

    • Simple design
    • Low maintenance
    • Easy to operate
    • Prevents mudballs and channeling
    • Increases backwash efficiency
    • Low maintenance

    Surface washers provide auxiliary cleaning used in conventional water wash filter systems.  Construction is of red brass with stainless steel as an available option.  Surface washer header pipe, drop pipe, rotating arm assemblies with spray nozzles, and stabilizers are included as standard equipment.

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    Tyler Drzycimiski
    515.268.8558
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