Log In Log In  |  Checkout   |  37 item(s)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x *Discontinued* RO6ALK
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)

View Cart$1,743.50
Specials Log InCreate Account Checkout  Shopping Cart37 item(s)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x *Discontinued* RO6ALK
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)

View Cart$1,743.50

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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