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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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  • 2186494B Whirlpool Refrigerator Water Filter Cap - Black
  • 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-150 Tier1 Inline Flow Restrictor

    PFR402Q-150 Tier1 Inline Flow Restrictor

    $10.99 Retail Price:  $13.79
  • PFR402Q-500 Tier1 Inline Flow Restrictor

    PFR402Q-500 Tier1 Inline Flow Restrictor

    $7.99 Retail Price:  $11.49
  • QMP502-38 Tier1 Compression Diverter Valve

    QMP502-38 Tier1 Compression Diverter Valve

    $12.99 Retail Price:  $17.24
  • W2391068 Doulton Diverter valve
  • 1SA Rusco Spigot Adapter Bushing

    1SA Rusco Spigot Adapter Bushing

    $3.99 Retail Price:  $6.89
  • ASV-ERP-JG Tier1 Automatic Shut-Off Valve

    ASV-ERP-JG Tier1 Automatic Shut-Off Valve

    $17.99 Retail Price:  $22.99
  • ASV-14QW Tier1 Automatic Shut-Off Valve

    ASV-14QW Tier1 Automatic Shut-Off Valve

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

    68998-31 3M Aqua-Pure Water Filter Coupler

    $4.99 Retail Price:  $8.96
  • BF-34 Culligan Brass Fitting Kit

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