Log In Log In  |  Checkout   |  55 item(s)
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x *Discontinued* RD150
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x *Discontinued* RD102
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x WS-150M, Whole House Water Softener
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 741-14, Diverter Valve for Countertop Water Units
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6

View Cart$5,468.89
Specials Log InCreate Account Checkout  Shopping Cart55 item(s)
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x *Discontinued* RD150
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x *Discontinued* RD102
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x WS-150M, Whole House Water Softener
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 741-14, Diverter Valve for Countertop Water Units
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6

View Cart$5,468.89

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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