Log In Log In  |  Checkout   |  35 item(s)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
2 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x *Discontinued* RD106
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x *Discontinued* RO6ALK
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT

View Cart$2,805.40
Specials Log InCreate Account Checkout  Shopping Cart35 item(s)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
2 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x *Discontinued* RD106
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x *Discontinued* RO6ALK
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT

View Cart$2,805.40

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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