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Water Filter Adapters & Couplers

Sometimes the smallest items can have the largest impact on the quality of your water.  At Discount Filter Store, you’ll find all the small water filter adapters and couplers you need, from diverter valves, automatic shut off valves, to refrigerator water filter caps, flow restrictors, and more; everything you need to keep your water filters operating at maximum efficiency. 

Searching for more water filter parts & accessories, check out our huge selection of mounting brackets, pumps & motors, drinking water test kits, and more.

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  • CNTP-DV-14C Tier1 Diverter Valve

    CNTP-DV-14C Tier1 Diverter Valve

    $8.99 Retail Price:  $13.90
  • M100 Tier1 Plastic Hex Nipple

    M100 Tier1 Plastic Hex Nipple

    $3.49 Retail Price:  $6.31
  • M34 Tier1 Plastic Hex Nipple

    M34 Tier1 Plastic Hex Nipple

    $2.99 Retail Price:  $5.74
  • PFR402Q-500 Tier1 Inline Flow Restrictor

    PFR402Q-500 Tier1 Inline Flow Restrictor

    $7.99 Retail Price:  $11.49
  • 1SA Rusco Spigot Adapter Bushing

    1SA Rusco Spigot Adapter Bushing

    $3.99 Retail Price:  $6.89
  • 155003 Pentek Water Filter Cartridge Coupler

    155003 Pentek Water Filter Cartridge Coupler

    $3.99 Retail Price:  $11.49
  • PI2308S Tier1 Two-Way Divider (1/4 Inch with Quick Connect Fittings)
  • ASV-14QW Tier1 Automatic Shut-Off Valve

    ASV-14QW Tier1 Automatic Shut-Off Valve

    $7.99 Retail Price:  $11.49
  • W2395982 Doulton Replacement Knob
  • 3M Aqua-Pure 68998-31 Water Filter Coupler

    68998-31 3M Aqua-Pure Water Filter Coupler

    $4.99 Retail Price:  $8.96
  • W2110880 Doulton Candle Replacement Washer
  • W2395740 Doulton Cobra Clip
  • W2395809 Doulton Grommet

    W2395809 Doulton Grommet For Gravity Filters

    $2.99 Retail Price:  $3.32

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