Log In Log In  |  Checkout   |  37 item(s)
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x HK120-P-TK for USA 110V / 60Hz
1 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 719, Drain Saddle Clamp / Valve
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x EMT-10, Empty Filter Cartridge Casing Housing
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 205, 5th stage final carbon filter
1 x 706, Membrane Filter Casing Housing Assembly
1 x FRQ300, Flow Restrictor 300ML / min
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO

View Cart$1,179.48
Specials Log InCreate Account Checkout  Shopping Cart37 item(s)
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x HK120-P-TK for USA 110V / 60Hz
1 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 719, Drain Saddle Clamp / Valve
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x EMT-10, Empty Filter Cartridge Casing Housing
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 205, 5th stage final carbon filter
1 x 706, Membrane Filter Casing Housing Assembly
1 x FRQ300, Flow Restrictor 300ML / min
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO

View Cart$1,179.48

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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