Log In Log In  |  Checkout   |  42 item(s)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x FRQ420, Flow Restrictor 420ML / min
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 752, DC Booster Pump w/ Transformer
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 578, TDS Water Quality Meter tds-3
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 205, 5th stage final carbon filter
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 213, 4th stage inline carbon filter (replace every 12 months)

View Cart$1,782.40
Specials Log InCreate Account Checkout  Shopping Cart42 item(s)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x FRQ420, Flow Restrictor 420ML / min
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 752, DC Booster Pump w/ Transformer
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 578, TDS Water Quality Meter tds-3
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 205, 5th stage final carbon filter
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 213, 4th stage inline carbon filter (replace every 12 months)

View Cart$1,782.40

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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