Log In Log In  |  Checkout   |  33 item(s)
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 720, Feed Water Adapter with Needle Valve
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 706, Membrane Filter Casing Housing Assembly
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)

View Cart$1,044.18
Specials Log InCreate Account Checkout  Shopping Cart33 item(s)
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 720, Feed Water Adapter with Needle Valve
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 706, Membrane Filter Casing Housing Assembly
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)

View Cart$1,044.18

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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