Log In Log In  |  Checkout   |  77 item(s)
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x Special Filter Kit Koolermax dealer distribution kit
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
View Cart$1,930.72
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Specials Log InCreate Account Checkout  Shopping Cart77 item(s)
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x Special Filter Kit Koolermax dealer distribution kit
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
View Cart$1,930.72

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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