Log In Log In  |  Checkout   |  31 item(s)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)

View Cart$1,299.45
Specials Log InCreate Account Checkout  Shopping Cart31 item(s)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)

View Cart$1,299.45

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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