Log In Log In  |  Checkout   |  32 item(s)
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x *Discontinued* RD102
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter

View Cart$1,260.98
Specials Log InCreate Account Checkout  Shopping Cart32 item(s)
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x *Discontinued* RD102
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter

View Cart$1,260.98

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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