Log In Log In  |  Checkout   |  32 item(s)
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x *Discontinued* RO585ERP
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x bulk818, DI resin refill bags Di-Ionization media
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x FRQ200, Flow Restrictor 200ML / min

View Cart$2,268.94
Specials Log InCreate Account Checkout  Shopping Cart32 item(s)
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x *Discontinued* RO585ERP
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x bulk818, DI resin refill bags Di-Ionization media
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x FRQ200, Flow Restrictor 200ML / min

View Cart$2,268.94

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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