Log In Log In  |  Checkout   |  56 item(s)
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x ERP1000 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 719, Drain Saddle Clamp / Valve
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x 565, Digital Pressure Gauge Tester Monitor
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal

View Cart$1,922.45
Specials Log InCreate Account Checkout  Shopping Cart56 item(s)
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x ERP1000 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 719, Drain Saddle Clamp / Valve
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x 565, Digital Pressure Gauge Tester Monitor
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal

View Cart$1,922.45

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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