Log In Log In  |  Checkout   |  50 item(s)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
2 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
2 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 TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
2 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
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x *Discontinued* RO6ALK
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x 205, 3rd stage solid carbon block filter
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x MK420, Maintenance kit for RO565
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"

View Cart$2,682.87
Specials Log InCreate Account Checkout  Shopping Cart50 item(s)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
2 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
2 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 TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
2 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
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x *Discontinued* RO6ALK
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x 205, 3rd stage solid carbon block filter
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x MK420, Maintenance kit for RO565
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"

View Cart$2,682.87

ATU TEE Union Connector Quick Connect QC Fitting [ATU]

$3.50

ATU TEE Union Connector Quick Connect QC Fitting



* ATU TEE Union Connector, Quick Connect

* Please choose size from the selection box below. Both numbers are tubing OD Outside Diameter. First number is Tee double side and second number is the single side. (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 1/4" Tube OD ATU0404
* 3/8" Tube OD x 1/4" Tube OD ATU0604
* 3/8" Tube OD x 3/8" Tube OD ATU0606
* 1/2" Tube OD x 3/8" Tube OD ATU0706
* 1/2" Tube OD x 1/2" Tube OD ATU0707


* 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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