Log In Log In  |  Checkout   |  70 item(s)
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x 706, Membrane Filter Casing Housing Assembly
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x 752, DC Booster Pump w/ Transformer
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x UU Clips Pair from Bracket to Membrane Filter
2 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x FRQ200, Flow Restrictor 200ML / min
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x *Discontinued* RO585ERP
1 x KT-103, Optional Manual Membrane Flush Valve
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x *Discontinued* RO585A
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK

View Cart$3,158.06
Specials Log InCreate Account Checkout  Shopping Cart70 item(s)
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x 706, Membrane Filter Casing Housing Assembly
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x 752, DC Booster Pump w/ Transformer
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x UU Clips Pair from Bracket to Membrane Filter
2 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x FRQ200, Flow Restrictor 200ML / min
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x *Discontinued* RO585ERP
1 x KT-103, Optional Manual Membrane Flush Valve
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x *Discontinued* RO585A
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK

View Cart$3,158.06

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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