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1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
2 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 752, DC Booster Pump w/ Transformer
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x FRQ200, Flow Restrictor 200ML / min
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x *Discontinued* RO585NTF
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x *Discontinued* RO6ALK
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x DB40, DI Resin Refill Bag for DI210, RD322

View Cart$2,999.23
Specials Log InCreate Account Checkout  Shopping Cart80 item(s)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
2 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 752, DC Booster Pump w/ Transformer
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x FRQ200, Flow Restrictor 200ML / min
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x *Discontinued* RO585NTF
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x *Discontinued* RO6ALK
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x DB40, DI Resin Refill Bag for DI210, RD322

View Cart$2,999.23

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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