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1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
5 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x 6th Stage pn215 Refillable inline DI filter (color change)
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 723, Feed Water Adapter with Ball Valve
2 x 3rd stage C10 carbon block filter (replace every 6-12 months)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x *Discontinued* RO585NTF
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO

View Cart$2,015.45
Specials Log InCreate Account Checkout  Shopping Cart59 item(s)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
5 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x 6th Stage pn215 Refillable inline DI filter (color change)
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 723, Feed Water Adapter with Ball Valve
2 x 3rd stage C10 carbon block filter (replace every 6-12 months)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x *Discontinued* RO585NTF
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO

View Cart$2,015.45

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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