Log In Log In  |  Checkout   |  105 item(s)
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 752, DC Booster Pump w/ Transformer
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x MKP, Maintenance kit for K5150P K6150P AR150P
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x WS-150M, Whole House Water Softener
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
3 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x UU Clips Pair from Bracket to Membrane Filter
1 x *Discontinued* RD106
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x KT-103, Optional Manual Membrane Flush Valve
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
2 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 720, Feed Water Adapter with Needle Valve
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x PE Tubing Tube Cutter
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 565, Digital Pressure Gauge Tester Monitor
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x 719, Drain Saddle Clamp / Valve
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x HK120-P-TK for USA 110V / 60Hz
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System

View Cart$6,997.69
Specials Log InCreate Account Checkout  Shopping Cart105 item(s)
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 752, DC Booster Pump w/ Transformer
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x MKP, Maintenance kit for K5150P K6150P AR150P
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x WS-150M, Whole House Water Softener
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
3 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x UU Clips Pair from Bracket to Membrane Filter
1 x *Discontinued* RD106
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x KT-103, Optional Manual Membrane Flush Valve
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
2 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 720, Feed Water Adapter with Needle Valve
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x PE Tubing Tube Cutter
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 565, Digital Pressure Gauge Tester Monitor
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x 719, Drain Saddle Clamp / Valve
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x HK120-P-TK for USA 110V / 60Hz
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System

View Cart$6,997.69

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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