Log In Log In  |  Checkout   |  104 item(s)
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Special, Single Stage Housing Bracket Shell Connection Kit
2 x 752, DC Booster Pump w/ Transformer
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x WT-bac, Water Testing Kit, Bacteria Test
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 316, 2nd stage CTA 16 US Membrane filter
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
2 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x *Discontinued* RO585A
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x *Discontinued* RO6ALK
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
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 K6150P
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
2 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x 578, TDS Water Quality Meter tds-3
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
4 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x *Discontinued* RO155
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x *Discontinued* RO155C
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT

View Cart$5,156.63
Specials Log InCreate Account Checkout  Shopping Cart104 item(s)
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Special, Single Stage Housing Bracket Shell Connection Kit
2 x 752, DC Booster Pump w/ Transformer
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x WT-bac, Water Testing Kit, Bacteria Test
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 316, 2nd stage CTA 16 US Membrane filter
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
2 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x *Discontinued* RO585A
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x *Discontinued* RO6ALK
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
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 K6150P
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
2 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x 578, TDS Water Quality Meter tds-3
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
4 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x *Discontinued* RO155
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x *Discontinued* RO155C
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT

View Cart$5,156.63

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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