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1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x KT-103, Optional Manual Membrane Flush Valve
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x DI210, Heavy-duty DI system for Aquarium and Reef
5 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FRQ200, Flow Restrictor 200ML / min
4 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
4 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
5 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x ERP1000 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x bulk205, Carbon Block Filter
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x N-14-1M, Nipple Fitting connector between standard RO housing
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x *Discontinued* RD106
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
4 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 706, Membrane Filter Casing Housing Assembly
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x *Discontinued* RO585
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x TMR-AQT-2A, Transformer Power Supply Aquatec TACS114-48 for 8800
2 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
3 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 723, Feed Water Adapter with Ball Valve
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube

View Cart$6,094.32
Specials Log InCreate Account Checkout  Shopping Cart133 item(s)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x KT-103, Optional Manual Membrane Flush Valve
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x DI210, Heavy-duty DI system for Aquarium and Reef
5 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FRQ200, Flow Restrictor 200ML / min
4 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
4 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
5 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x ERP1000 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x bulk205, Carbon Block Filter
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x N-14-1M, Nipple Fitting connector between standard RO housing
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x *Discontinued* RD106
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
4 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 706, Membrane Filter Casing Housing Assembly
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x *Discontinued* RO585
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x TMR-AQT-2A, Transformer Power Supply Aquatec TACS114-48 for 8800
2 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
3 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 723, Feed Water Adapter with Ball Valve
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube

View Cart$6,094.32

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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