Log In Log In  |  Checkout   |  60 item(s)
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x bulkic21, Koolermax Inline Carbon Filter
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x bulkc10, Koolermax Carbon Block Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x bulk205, Carbon Block Filter
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x bulk818, DI resin refill bags Di-Ionization media
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch

View Cart$3,750.88
Specials Log InCreate Account Checkout  Shopping Cart60 item(s)
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x bulkic21, Koolermax Inline Carbon Filter
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x bulkc10, Koolermax Carbon Block Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x bulk205, Carbon Block Filter
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x bulk818, DI resin refill bags Di-Ionization media
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch

View Cart$3,750.88

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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