Log In Log In  |  Checkout   |  53 item(s)
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x FRQ200, Flow Restrictor 200ML / min
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 719, Drain Saddle Clamp / Valve
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 706, Membrane Filter Casing Housing Assembly
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 723, Feed Water Adapter with Ball Valve
1 x FRQ300, Flow Restrictor 300ML / min
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x 741-38, Diverter Valve for RO DI Water Systems
1 x DB40, DI Resin Refill Bag for DI210, RD322
2 x 741-14, Diverter Valve for Countertop Water Units
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 720, Feed Water Adapter with Needle Valve
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 213, 4th stage inline carbon filter (replace every 12 months)

View Cart$1,038.49
Specials Log InCreate Account Checkout  Shopping Cart53 item(s)
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x FRQ200, Flow Restrictor 200ML / min
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 719, Drain Saddle Clamp / Valve
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 706, Membrane Filter Casing Housing Assembly
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 723, Feed Water Adapter with Ball Valve
1 x FRQ300, Flow Restrictor 300ML / min
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x 741-38, Diverter Valve for RO DI Water Systems
1 x DB40, DI Resin Refill Bag for DI210, RD322
2 x 741-14, Diverter Valve for Countertop Water Units
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 720, Feed Water Adapter with Needle Valve
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 213, 4th stage inline carbon filter (replace every 12 months)

View Cart$1,038.49

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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