Log In Log In  |  Checkout   |  75 item(s)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 720, Feed Water Adapter with Needle Valve
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x 752, DC Booster Pump w/ Transformer
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x bulk818, DI resin refill bags Di-Ionization media
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
2 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 578, TDS Water Quality Meter tds-3
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 201, 1st stage sediment filter (replace every 6-12 months)

View Cart$3,981.54
Specials Log InCreate Account Checkout  Shopping Cart75 item(s)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 720, Feed Water Adapter with Needle Valve
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x 752, DC Booster Pump w/ Transformer
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x bulk818, DI resin refill bags Di-Ionization media
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
2 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 578, TDS Water Quality Meter tds-3
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 201, 1st stage sediment filter (replace every 6-12 months)

View Cart$3,981.54

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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