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1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x 720, Feed Water Adapter with Needle Valve
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x DB40, DI Resin Refill Bag for DI210, RD322
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 741-38, Diverter Valve for RO DI Water Systems
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FRQ850, Flow Restrictor 850ML / min
2 x 3rd stage C10 carbon block filter (replace every 6-12 months)
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x FRQ300, Flow Restrictor 300ML / min
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 706, Membrane Filter Casing Housing Assembly
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
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 FRQ200, Flow Restrictor 200ML / min
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 752, DC Booster Pump w/ Transformer
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 723, Feed Water Adapter with Ball Valve
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G

View Cart$6,348.52
Specials Log InCreate Account Checkout  Shopping Cart126 item(s)
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x 720, Feed Water Adapter with Needle Valve
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x DB40, DI Resin Refill Bag for DI210, RD322
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 741-38, Diverter Valve for RO DI Water Systems
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FRQ850, Flow Restrictor 850ML / min
2 x 3rd stage C10 carbon block filter (replace every 6-12 months)
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x FRQ300, Flow Restrictor 300ML / min
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 706, Membrane Filter Casing Housing Assembly
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
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 FRQ200, Flow Restrictor 200ML / min
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 752, DC Booster Pump w/ Transformer
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 723, Feed Water Adapter with Ball Valve
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G

View Cart$6,348.52

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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