Log In Log In  |  Checkout   |  208 item(s)
4 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
6 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x MK420, Maintenance kit for RO565
1 x 310, 2nd stage CTA 10 US Membrane filter (every 2-3 yrs)
8 x Optional: 564 Membrane Filter Housing Wrench Opener
4 x 1st stage SF05 sediment filter (replace every 6-12 months)
4 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
4 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
5 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
7 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
6 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
3 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
5 x Parts, Ro Water System Installation Parts Bag 1/4"
4 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
5 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 6th Stage pn215 Refillable inline DI filter (color change)
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
3 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 5th Stage pn215 Refillable inline DI filter (color change)
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
3 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
3 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x FRQ300, Flow Restrictor 300ML / min
1 x *Discontinued* RO6ALK
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
3 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x FRQ550, Flow Restrictor 500 to 600ML / min
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
3 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x *Discontinued* RO585A
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 706, Membrane Filter Casing Housing Assembly
2 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x *Discontinued* RO585
2 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x *Discontinued* RO585ERP
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x *Discontinued* RO585NTF
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Dispense
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 720, Feed Water Adapter with Needle Valve
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 719, Drain Saddle Clamp / Valve
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x *Discontinued* RD106
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE

View Cart$8,983.70
Specials Log InCreate Account Checkout  Shopping Cart208 item(s)
4 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
6 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x MK420, Maintenance kit for RO565
1 x 310, 2nd stage CTA 10 US Membrane filter (every 2-3 yrs)
8 x Optional: 564 Membrane Filter Housing Wrench Opener
4 x 1st stage SF05 sediment filter (replace every 6-12 months)
4 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
4 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
5 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
7 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
6 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
3 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
5 x Parts, Ro Water System Installation Parts Bag 1/4"
4 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
5 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 6th Stage pn215 Refillable inline DI filter (color change)
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
3 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 5th Stage pn215 Refillable inline DI filter (color change)
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
3 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
3 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x FRQ300, Flow Restrictor 300ML / min
1 x *Discontinued* RO6ALK
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
3 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x FRQ550, Flow Restrictor 500 to 600ML / min
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
3 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x *Discontinued* RO585A
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 706, Membrane Filter Casing Housing Assembly
2 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x *Discontinued* RO585
2 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x *Discontinued* RO585ERP
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x *Discontinued* RO585NTF
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Dispense
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 720, Feed Water Adapter with Needle Valve
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 719, Drain Saddle Clamp / Valve
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x *Discontinued* RD106
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE

View Cart$8,983.70

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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