Log In Log In  |  Checkout   |  28 item(s)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 205 2nd stage solid carbon block filter (replace every 12 month)

View Cart$484.35
Specials Log InCreate Account Checkout  Shopping Cart28 item(s)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 205 2nd stage solid carbon block filter (replace every 12 month)

View Cart$484.35

ARD, Reducer Fitting Straight Tube OD Stem OD [ARD]

$3.50

ARD, Reducer Fitting Straight Tube OD Stem OD



* ARD, Reducer Fitting Straight Tube OD Stem OD

* Please choose size from the selection box below. First number is tubing OD and second number is Stem OD Outside Diameter (Pipe sizes can be confusing even for the experienced user. Pipe size is not the actual outside or inside diameter of the pipe but is the industry accepted designation. If you have any question please email us first.)
* 1/4" Tube OD x 3/8" Stem OD ARD0406
* 3/8" Tube OD x 1/2" Stem OD ARD0607


* Water & foods use: Products are manufactured from safe, non-toxic materials meeting the requirements of the US FDA, ERAS, ANSI/NSF-51,61, and SK Zert. Our products are widely used in water purification, food/beverage, and pneumatic systems.

* Function & Quality: Provides quick and convenient assembly-saving time & expense.

* Collet Design: Our unique oval collet design is superior and more practical, and is an improvement welcomed by our world wide customers in all industries.

* Additional Applications: Beyond water and food use, fittings can be used with air, gases, vacuum, & liquids. All connections can be assembled & disassembled repeatedly. A broad range of sizes covers a broad scope of applications.

* We carry different fittings in variation of sizes: 1/4", 3/8", or 1/2" adapters, connectors, fittings, or valves.  Most are not listed online, to avoid confusion to majority of RO system customers.  

* Send us a message with specification, intended application, and image of your setup or old fitting  to check if we have what you need. 

Available Options:

Size Combination:

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