Log In Log In  |  Checkout   |  113 item(s)
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
3 x KT-103, Optional Manual Membrane Flush Valve
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x *Discontinued* RO585ERP
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
5 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
3 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
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
3 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
3 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x FRQ200, Flow Restrictor 200ML / min
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x 723, Feed Water Adapter with Ball Valve
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x *Discontinued* RO585NTF
1 x 706, Membrane Filter Casing Housing Assembly
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
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 RO585
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x *Discontinued* RD150
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 719, Drain Saddle Clamp / Valve
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x *Discontinued* RD106
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x *Discontinued* RO155

View Cart$6,180.35
Specials Log InCreate Account Checkout  Shopping Cart113 item(s)
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
3 x KT-103, Optional Manual Membrane Flush Valve
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x *Discontinued* RO585ERP
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
5 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
3 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
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
3 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
3 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x FRQ200, Flow Restrictor 200ML / min
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x 723, Feed Water Adapter with Ball Valve
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x *Discontinued* RO585NTF
1 x 706, Membrane Filter Casing Housing Assembly
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
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 RO585
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x *Discontinued* RD150
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 719, Drain Saddle Clamp / Valve
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x *Discontinued* RD106
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x *Discontinued* RO155

View Cart$6,180.35

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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