Log In Log In  |  Checkout   |  91 item(s)
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
3 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x *Discontinued* RD150
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x *Discontinued* RD106
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x DI210, Heavy-duty DI system for Aquarium and Reef
5 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
3 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
2 x KT-103, Optional Manual Membrane Flush Valve
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 565, Digital Pressure Gauge Tester Monitor
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO

View Cart$5,038.99
Specials Log InCreate Account Checkout  Shopping Cart91 item(s)
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
3 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x *Discontinued* RD150
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x *Discontinued* RD106
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x DI210, Heavy-duty DI system for Aquarium and Reef
5 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
3 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
2 x KT-103, Optional Manual Membrane Flush Valve
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 565, Digital Pressure Gauge Tester Monitor
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO

View Cart$5,038.99

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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