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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

    2186494B Whirlpool Refrigerator Water Filter Cap - Black

    $13.99 Retail Price:  $17.24
  • PFR402Q-150 Tier1 Inline Flow Restrictor

    PFR402Q-150 Tier1 Inline Flow Restrictor

    $10.99 Retail Price:  $13.79
  • QMP502-38 Tier1 Compression Diverter Valve

    QMP502-38 Tier1 Compression Diverter Valve

    $12.99 Retail Price:  $17.24
  • ELF-VALVED-HEAD-KK Omnipure Valved Water Filter Head

    ELF-VALVED-HEAD-KK Omnipure Valved Water Filter Head

    $17.99 Retail Price:  $22.99
  • ASV-ERP-JG Tier1 Automatic Shut-Off Valve

    ASV-ERP-JG Tier1 Automatic Shut-Off Valve

    $17.99 Retail Price:  $22.99
  • 2186494W Whirlpool Refrigerator Water Filter Cap - White

    2186494W Whirlpool Refrigerator Water Filter Cap - White

    $12.99 Retail Price:  $17.24
  • 2260518W Whirlpool PUR Refrigerator Water Filter Cap - White
  • ADAPTER GE SmartWater Filter Adapter
  • BF-34 Culligan Brass Fitting Kit
  • FVK-100 Culligan Inline Water Filter Flush Valve Kit

    FVK-100 Culligan Inline Water Filter Flush Valve Kit

    $14.99 Retail Price:  $19.54
  • RV-BYP-EZ Culligan RV Bypass Fitting Adapter
  • Hydrologic 3/4-inch Male Pipe to Male Garden Hose Thread Connector

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