Log In Log In  |  Checkout   |  48 item(s)
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x FRQ850, Flow Restrictor 850ML / min
2 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 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 O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x *Discontinued* RD106
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better

View Cart$2,113.97
Specials Log InCreate Account Checkout  Shopping Cart48 item(s)
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x FRQ850, Flow Restrictor 850ML / min
2 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 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 O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x *Discontinued* RD106
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better

View Cart$2,113.97

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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