Log In Log In  |  Checkout   |  31 item(s)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x PE Tubing Tube Cutter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
2 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x *Discontinued* RO155C
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G

View Cart$1,313.50
Specials Log InCreate Account Checkout  Shopping Cart31 item(s)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x PE Tubing Tube Cutter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
2 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x *Discontinued* RO155C
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G

View Cart$1,313.50

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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