Discount Water Filters and Air Filters at Discount Filter Store.com

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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
    MSRP: $17.24
    Save 19%
  • PFR402Q-150 Tier1 Inline Flow Restrictor

    PFR402Q-150 Tier1 Inline Flow Restrictor

    $10.99
    MSRP: $13.79
    Save 20%
  • QMP502-38 Tier1 Compression Diverter Valve

    QMP502-38 Tier1 Compression Diverter Valve

    $12.99
    MSRP: $17.24
    Save 25%
  • ELF-VALVED-HEAD-KK Omnipure Valved Water Filter Head

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

    $17.99
    MSRP: $22.99
    Save 22%
  • ASV-ERP-JG Tier1 Automatic Shut-Off Valve

    ASV-ERP-JG Tier1 Automatic Shut-Off Valve

    $17.99
    MSRP: $22.99
    Save 22%
  • 2186494W Whirlpool Refrigerator Water Filter Cap - White

    2186494W Whirlpool Refrigerator Water Filter Cap - White

    $12.99
    MSRP: $17.24
    Save 25%
  • 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
    MSRP: $19.54
    Save 23%
  • RV-BYP-EZ Culligan RV Bypass Fitting Adapter
  • Hydrologic 3/4-inch Male Pipe to Male Garden Hose Thread Connector

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