Log In Log In  |  Checkout   |  46 item(s)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
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 KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x 719, Drain Saddle Clamp / Valve
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x HK120-P-TK for USA 110V / 60Hz
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting

View Cart$2,184.99
Specials Log InCreate Account Checkout  Shopping Cart46 item(s)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
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 KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x 719, Drain Saddle Clamp / Valve
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x HK120-P-TK for USA 110V / 60Hz
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting

View Cart$2,184.99

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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