Log In Log In  |  Checkout   |  51 item(s)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x PE Tubing Tube Cutter
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x 565, Digital Pressure Gauge Tester Monitor
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x *Discontinued* RO6ALK
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"

View Cart$2,855.00
Specials Log InCreate Account Checkout  Shopping Cart51 item(s)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x PE Tubing Tube Cutter
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x 565, Digital Pressure Gauge Tester Monitor
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x *Discontinued* RO6ALK
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"

View Cart$2,855.00

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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