Log In Log In  |  Checkout   |  42 item(s)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
2 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x *Discontinued* RD102
1 x bulksf05, Koolermax Sediment Filter
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x bulk205, Carbon Block Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
2 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System

View Cart$2,616.44
Specials Log InCreate Account Checkout  Shopping Cart42 item(s)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
2 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x *Discontinued* RD102
1 x bulksf05, Koolermax Sediment Filter
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x bulk205, Carbon Block Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
2 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System

View Cart$2,616.44

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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