Log In Log In  |  Checkout   |  66 item(s)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x *Discontinued* RD102
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x TMR-AQT-2A, Transformer Power Supply Aquatec TACS114-48 for 8800
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x *Discontinued* RO585
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x *Discontinued* RO585NTF
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 752, DC Booster Pump w/ Transformer
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 205, 5th stage final carbon filter
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill

View Cart$3,640.40
Specials Log InCreate Account Checkout  Shopping Cart66 item(s)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x *Discontinued* RD102
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x TMR-AQT-2A, Transformer Power Supply Aquatec TACS114-48 for 8800
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x *Discontinued* RO585
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x *Discontinued* RO585NTF
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 752, DC Booster Pump w/ Transformer
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 205, 5th stage final carbon filter
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill

View Cart$3,640.40

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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