Log In Log In  |  Checkout   |  80 item(s)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
3 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x *Discontinued* RO585
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x KT-103, Optional Manual Membrane Flush Valve
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x *Discontinued* RO585ERP
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x *Discontinued* RO585A
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x 723, Feed Water Adapter with Ball Valve
1 x 720, Feed Water Adapter with Needle Valve
1 x 741-14, Diverter Valve for Countertop Water Units
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 706, Membrane Filter Casing Housing Assembly
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x KF750UP, SUBSTITUTE/Upgrade KOOLERMAX Faucet CHROME FINISH
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G

View Cart$4,428.03
Specials Log InCreate Account Checkout  Shopping Cart80 item(s)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
3 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x *Discontinued* RO585
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x KT-103, Optional Manual Membrane Flush Valve
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x *Discontinued* RO585ERP
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x *Discontinued* RO585A
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x 723, Feed Water Adapter with Ball Valve
1 x 720, Feed Water Adapter with Needle Valve
1 x 741-14, Diverter Valve for Countertop Water Units
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 706, Membrane Filter Casing Housing Assembly
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x KF750UP, SUBSTITUTE/Upgrade KOOLERMAX Faucet CHROME FINISH
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G

View Cart$4,428.03

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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