Log In Log In  |  Checkout   |  65 item(s)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x 706, Membrane Filter Casing Housing Assembly
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
2 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 752, DC Booster Pump w/ Transformer
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
2 x 719, Drain Saddle Clamp / Valve
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 1st stage SF05 sediment filter (replace every 6-12 months)

View Cart$2,452.86
Specials Log InCreate Account Checkout  Shopping Cart65 item(s)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x 706, Membrane Filter Casing Housing Assembly
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
2 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 752, DC Booster Pump w/ Transformer
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
2 x 719, Drain Saddle Clamp / Valve
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 1st stage SF05 sediment filter (replace every 6-12 months)

View Cart$2,452.86

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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