Log In Log In  |  Checkout   |  47 item(s)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Dispense
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x MK8002, Maintenance kit for double membrane system RD322 RO260

View Cart$1,646.49
Specials Log InCreate Account Checkout  Shopping Cart47 item(s)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Dispense
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x MK8002, Maintenance kit for double membrane system RD322 RO260

View Cart$1,646.49

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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