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1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
2 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
4 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
2 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x bulk818, DI resin refill bags Di-Ionization media
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
4 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
3 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x bulksf05, Koolermax Sediment Filter
2 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
4 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x DB40, DI Resin Refill Bag for DI210, RD322
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x EMT-10, Empty Filter Cartridge Casing Housing
2 x 752, DC Booster Pump w/ Transformer
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
2 x KT-103, Optional Manual Membrane Flush Valve
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x *Discontinued* RD106
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x 913, 5th stage inline carbon filter (every 12 months)
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
2 x 578, TDS Water Quality Meter tds-3
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 565, Digital Pressure Gauge Tester Monitor
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FRQ200, Flow Restrictor 200ML / min
1 x CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
3 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT

View Cart$8,093.86
Specials Log InCreate Account Checkout  Shopping Cart160 item(s)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
2 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
4 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
2 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x bulk818, DI resin refill bags Di-Ionization media
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
4 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
3 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x bulksf05, Koolermax Sediment Filter
2 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
4 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x DB40, DI Resin Refill Bag for DI210, RD322
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x EMT-10, Empty Filter Cartridge Casing Housing
2 x 752, DC Booster Pump w/ Transformer
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
2 x KT-103, Optional Manual Membrane Flush Valve
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x *Discontinued* RD106
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x 913, 5th stage inline carbon filter (every 12 months)
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
2 x 578, TDS Water Quality Meter tds-3
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 565, Digital Pressure Gauge Tester Monitor
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FRQ200, Flow Restrictor 200ML / min
1 x CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
3 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT

View Cart$8,093.86

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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