Log In Log In  |  Checkout   |  54 item(s)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO

View Cart$1,173.38
Specials Log InCreate Account Checkout  Shopping Cart54 item(s)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO

View Cart$1,173.38

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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