Log In Log In  |  Checkout   |  52 item(s)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 741-14, Diverter Valve for Countertop Water Units
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 201, 1st stage sediment filter (replace every 6-12 months)

View Cart$1,560.85
Specials Log InCreate Account Checkout  Shopping Cart52 item(s)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 741-14, Diverter Valve for Countertop Water Units
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 201, 1st stage sediment filter (replace every 6-12 months)

View Cart$1,560.85

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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