Log In Log In  |  Checkout   |  137 item(s)
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
2 x Optional: 564 Membrane Filter Housing Wrench Opener
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x MK420, Maintenance kit for RO565
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x *Discontinued* RD106
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
2 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
3 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x *Discontinued* RO585NTF
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x 752, DC Booster Pump w/ Transformer
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 706, Membrane Filter Casing Housing Assembly
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
2 x KT-103, Optional Manual Membrane Flush Valve
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x *Discontinued* RO585A
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x DI210, Heavy-duty DI system for Aquarium and Reef
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
2 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x FRQ300, Flow Restrictor 300ML / min
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x *Discontinued* RO155C
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1

View Cart$7,624.94
Specials Log InCreate Account Checkout  Shopping Cart137 item(s)
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
2 x Optional: 564 Membrane Filter Housing Wrench Opener
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x MK420, Maintenance kit for RO565
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x *Discontinued* RD106
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
2 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
3 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x *Discontinued* RO585NTF
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x 752, DC Booster Pump w/ Transformer
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 706, Membrane Filter Casing Housing Assembly
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
2 x KT-103, Optional Manual Membrane Flush Valve
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x *Discontinued* RO585A
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x DI210, Heavy-duty DI system for Aquarium and Reef
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
2 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x FRQ300, Flow Restrictor 300ML / min
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x *Discontinued* RO155C
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1

View Cart$7,624.94

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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