Log In Log In  |  Checkout   |  35 item(s)
1 x 741-14, Diverter Valve for Countertop Water Units
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x *Discontinued* RO155C
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 752, DC Booster Pump w/ Transformer
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x 565, Digital Pressure Gauge Tester Monitor
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 720, Feed Water Adapter with Needle Valve
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 719, Drain Saddle Clamp / Valve
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch

View Cart$1,329.39
Specials Log InCreate Account Checkout  Shopping Cart35 item(s)
1 x 741-14, Diverter Valve for Countertop Water Units
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x *Discontinued* RO155C
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 752, DC Booster Pump w/ Transformer
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x 565, Digital Pressure Gauge Tester Monitor
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 720, Feed Water Adapter with Needle Valve
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 719, Drain Saddle Clamp / Valve
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch

View Cart$1,329.39

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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