Log In Log In  |  Checkout   |  131 item(s)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x *Discontinued* RD150
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x *Discontinued* RD106
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x *Discontinued* RD102
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 706, Membrane Filter Casing Housing Assembly
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x 214, Clear Inline Filter Cartridge Empty Case
2 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 752, DC Booster Pump w/ Transformer
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x bulkc10, Koolermax Carbon Block Filter
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x 578, TDS Water Quality Meter tds-3
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
2 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x PE Tubing Tube Cutter
1 x 720, Feed Water Adapter with Needle Valve
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x bulk213, Inline Carbon Filter
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
2 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x bulk201, Sediment Filter
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x UU Clips Pair from Bracket to Membrane Filter
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x 741-14, Diverter Valve for Countertop Water Units
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x 723, Feed Water Adapter with Ball Valve
1 x bulksf05, Koolermax Sediment Filter
1 x 1st stage SF05 sediment filter (replace every 6-12 months)

View Cart$8,151.66
Specials Log InCreate Account Checkout  Shopping Cart131 item(s)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x *Discontinued* RD150
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x *Discontinued* RD106
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x *Discontinued* RD102
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 706, Membrane Filter Casing Housing Assembly
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x 214, Clear Inline Filter Cartridge Empty Case
2 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 752, DC Booster Pump w/ Transformer
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x bulkc10, Koolermax Carbon Block Filter
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x 578, TDS Water Quality Meter tds-3
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
2 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x PE Tubing Tube Cutter
1 x 720, Feed Water Adapter with Needle Valve
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x bulk213, Inline Carbon Filter
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
2 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x bulk201, Sediment Filter
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x UU Clips Pair from Bracket to Membrane Filter
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x 741-14, Diverter Valve for Countertop Water Units
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x 723, Feed Water Adapter with Ball Valve
1 x bulksf05, Koolermax Sediment Filter
1 x 1st stage SF05 sediment filter (replace every 6-12 months)

View Cart$8,151.66

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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