Log In Log In  |  Checkout   |  25 item(s)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x *Discontinued* RD106
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x bulk213, Inline Carbon Filter
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block

View Cart$1,494.99
Specials Log InCreate Account Checkout  Shopping Cart25 item(s)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x *Discontinued* RD106
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x bulk213, Inline Carbon Filter
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block

View Cart$1,494.99

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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