Log In Log In  |  Checkout   |  197 item(s)
2 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
7 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x KT-103, Optional Manual Membrane Flush Valve
5 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
3 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
3 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
3 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
4 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
4 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
6 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*
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
7 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
5 x 205 2nd stage solid carbon block filter (replace every 12 month)
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
2 x 741-14, Diverter Valve for Countertop Water Units
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 741-38, Diverter Valve for RO DI Water Systems
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
2 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
6 x Optional: 564 Membrane Filter Housing Wrench Opener
4 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
3 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x PE Tubing Tube Cutter
2 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
2 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x *Discontinued* RO585ERP
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 723, Feed Water Adapter with Ball Valve
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x *Discontinued* RD106
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)

View Cart$6,396.87
Specials Log InCreate Account Checkout  Shopping Cart197 item(s)
2 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
7 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x KT-103, Optional Manual Membrane Flush Valve
5 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
3 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
3 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
3 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
4 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
4 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
6 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*
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
7 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
5 x 205 2nd stage solid carbon block filter (replace every 12 month)
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
2 x 741-14, Diverter Valve for Countertop Water Units
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 741-38, Diverter Valve for RO DI Water Systems
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
2 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
6 x Optional: 564 Membrane Filter Housing Wrench Opener
4 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
3 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x PE Tubing Tube Cutter
2 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
2 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x *Discontinued* RO585ERP
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 723, Feed Water Adapter with Ball Valve
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x *Discontinued* RD106
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)

View Cart$6,396.87

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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