Log In Log In  |  Checkout   |  98 item(s)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
5 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 706, Membrane Filter Casing Housing Assembly
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x *Discontinued* RO155C
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x FRQ850, Flow Restrictor 850ML / min
1 x WS-150M, Whole House Water Softener
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x 752, DC Booster Pump w/ Transformer
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x MK420, Maintenance kit for RO565
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
2 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet

View Cart$9,990.80
Specials Log InCreate Account Checkout  Shopping Cart98 item(s)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
5 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 706, Membrane Filter Casing Housing Assembly
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x *Discontinued* RO155C
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x FRQ850, Flow Restrictor 850ML / min
1 x WS-150M, Whole House Water Softener
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x 752, DC Booster Pump w/ Transformer
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x MK420, Maintenance kit for RO565
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
2 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet

View Cart$9,990.80

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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