Log In Log In  |  Checkout   |  33 item(s)
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x *Discontinued* RO585NTF
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x bulk213, Inline Carbon Filter
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P

View Cart$1,706.00
Specials Log InCreate Account Checkout  Shopping Cart33 item(s)
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x *Discontinued* RO585NTF
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x bulk213, Inline Carbon Filter
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P

View Cart$1,706.00

ATEU, Tube Elbow Union Connector Fitting Tube OD Stem OD [ATEU]

$3.00

ATEU, Tube Elbow Union Connector Fitting Tube OD Stem OD



* ATEU, Tube Elbow Union Fitting Tube OD - Stem OD

* Please choose size from the selection box below. First number is tubing OD and second number is Stem OD Outside Diameter (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" Stem OD ATEU0404
* 1/4" Tube OD x 3/8" Stem OD ATEU0406
* 3/8" Tube OD x 3/8" Stem OD ATEU0606
* 3/8" Tube OD x 1/2" Stem OD ATEU0607
* 1/2" Tube OD x 1/2" Stem OD ATEU0707


* 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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