Log In Log In  |  Checkout   |  26 item(s)
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH

View Cart$940.93
Specials Log InCreate Account Checkout  Shopping Cart26 item(s)
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH

View Cart$940.93

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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