Log In Log In  |  Checkout   |  26 item(s)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x KT-103, Optional Manual Membrane Flush Valve
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 720, Feed Water Adapter with Needle Valve
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO

View Cart$664.55
Specials Log InCreate Account Checkout  Shopping Cart26 item(s)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x KT-103, Optional Manual Membrane Flush Valve
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 720, Feed Water Adapter with Needle Valve
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO

View Cart$664.55

AUC Union Connector OD Quick Connect QC Fitting [AUC]

$3.00

AUC Union Connector OD Quick Connect QC Fitting



* AUC, Union Connector, Quick Connect type

* Please choose size from the selection box below. Both numbers are tubing 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" Tube OD AUC0404
* 3/8" Tube OD x 1/4" Tube OD AUC0604
* 3/8" Tube OD x 3/8" Tube OD AUC0606
* 1/2" Tube OD x 3/8" Tube OD AUC0706
* 1/2" Tube OD x 1/2" Tube OD AUC0707


* 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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