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2 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
2 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
2 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
3 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x N-14-1M, Nipple Fitting connector between standard RO housing
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x *Discontinued* RO6ALK
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x *Discontinued* RO585A
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x UU Clips Pair from Bracket to Membrane Filter
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x bulk818, DI resin refill bags Di-Ionization media
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x PE Tubing Tube Cutter
1 x TMR-AQT-2A, Transformer Power Supply Aquatec TACS114-48 for 8800
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 752, DC Booster Pump w/ Transformer
1 x bulkic21, Koolermax Inline Carbon Filter
1 x bulk201, Sediment Filter
1 x 706, Membrane Filter Casing Housing Assembly
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
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 .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
2 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x ERP1000 Aquatec Permeate Pump Reverse Osmosis RO System USA made
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
2 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x bulk205, Carbon Block Filter
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x *Discontinued* RO585ERP
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
2 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
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
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x *Discontinued* RD150
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
2 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 565, Digital Pressure Gauge Tester Monitor
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x *Discontinued* RD102
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT

View Cart$10,791.27
Specials Log InCreate Account Checkout  Shopping Cart159 item(s)
2 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
2 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
2 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
3 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x N-14-1M, Nipple Fitting connector between standard RO housing
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x *Discontinued* RO6ALK
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x *Discontinued* RO585A
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x UU Clips Pair from Bracket to Membrane Filter
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x bulk818, DI resin refill bags Di-Ionization media
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x PE Tubing Tube Cutter
1 x TMR-AQT-2A, Transformer Power Supply Aquatec TACS114-48 for 8800
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 752, DC Booster Pump w/ Transformer
1 x bulkic21, Koolermax Inline Carbon Filter
1 x bulk201, Sediment Filter
1 x 706, Membrane Filter Casing Housing Assembly
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
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 .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
2 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x ERP1000 Aquatec Permeate Pump Reverse Osmosis RO System USA made
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
2 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x bulk205, Carbon Block Filter
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x *Discontinued* RO585ERP
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
2 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
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
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x *Discontinued* RD150
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
2 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 565, Digital Pressure Gauge Tester Monitor
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x *Discontinued* RD102
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT

View Cart$10,791.27

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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