Log In Log In  |  Checkout   |  32 item(s)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322

View Cart$1,033.00
Specials Log InCreate Account Checkout  Shopping Cart32 item(s)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322

View Cart$1,033.00

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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