Harmsco 30" 931 Up-Flow Replacement Filters - 50 Microns

  • Pleated Design with Up to 50% more Surface Area Over Other Brands

  • Polyester-Plus Media Improves Performance & Contaminant Removal

  • Longer Filtration Runs for Fewer Change-outs & Less Maintenance

  • Reusability & the Lowest Cost Per Gallon Filtered

  • Low Pressure Drop & High Flow Capability

  • Thermally Bonded for Longer Usable Life

  • FDA Approved Materials - NSF 61 Certified

  • Made in USA of High Quality Components Made in USA

  • Listed Price:$27.00


    Pleated Polyester-Plus Filter Media

    Harmsco's Up-flow 931 replacement filters are reusable and washable pleated polyester filters specifically designed to remove contaminants with high flow capability and low pressure drop. Pressure drops are exceptionally low due to the filters' high surface area. Advanced polyester-plus media can tolerate high temperatures up to 140°F and are engineered to deliver unparalleled durability and performance.

    Low Pressure Drop with Harmsco Cartridges


    Advanced Harmsco Cartridges

    Pressure drops are exceptionally low with Harmsco filter cartridges due to high surface area and Polyester-Plus engineered media. The data shown to the left is per 9-3/4" cartridge in clean water.


Performance & Specification

    Cartridge Specifications and Performance Data


    Harmsco 931 30" Replacement Filters

    System Compatibility

    HIF-21, HIF-24, HIF-42, HIF-75, HIF-150FL


    30" X 2 3/4" O.D X 1 1/16" I.D

    Micron Rating

    50 Microns

    Flow Rate

    4 - 6 gpm


    3 to 11

    Filter Media


    Temperature Rating*


    Surface Area

    6 sq. ft. per 9 3/4" length

    End Caps

    Plastisol (pliable PVC)

    Center Tubes

    Molded ABS or Rigid PVC

    Shrink Wrap

    Single length cartridges are available shrink wrapped

    Solids Removed

    12.0 oz. (340 grams)

    Quantity Filtered

    50.4 gallons (189 liters)

    *Temperature limits vary and depend on pressure and time under load.

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