Log In Log In  |  Checkout   |  72 item(s)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
2 x 720, Feed Water Adapter with Needle Valve
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
2 x 723, Feed Water Adapter with Ball Valve
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x DB40, DI Resin Refill Bag for DI210, RD322
2 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 752, DC Booster Pump w/ Transformer
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x KT-103, Optional Manual Membrane Flush Valve
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G

View Cart$1,555.95
Specials Log InCreate Account Checkout  Shopping Cart72 item(s)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
2 x 720, Feed Water Adapter with Needle Valve
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
2 x 723, Feed Water Adapter with Ball Valve
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x DB40, DI Resin Refill Bag for DI210, RD322
2 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 752, DC Booster Pump w/ Transformer
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x KT-103, Optional Manual Membrane Flush Valve
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G

View Cart$1,555.95

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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