Log In Log In  |  Checkout   |  131 item(s)
3 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x *Discontinued* RO155
1 x *Discontinued* RD150
2 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x *Discontinued* RD106
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x *Discontinued* RD102
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
2 x 706, Membrane Filter Casing Housing Assembly
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
2 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x HK120-P-TK for USA 110V / 60Hz
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x KT-103, Optional Manual Membrane Flush Valve
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x *Discontinued* RO155C
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 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
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x MK420, Maintenance kit for RO565
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 719, Drain Saddle Clamp / Valve
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x FRQ300, Flow Restrictor 300ML / min
1 x FRQ850, Flow Restrictor 850ML / min
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch

View Cart$10,652.44
Specials Log InCreate Account Checkout  Shopping Cart131 item(s)
3 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x *Discontinued* RO155
1 x *Discontinued* RD150
2 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x *Discontinued* RD106
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x *Discontinued* RD102
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
2 x 706, Membrane Filter Casing Housing Assembly
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
2 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x HK120-P-TK for USA 110V / 60Hz
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x KT-103, Optional Manual Membrane Flush Valve
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x *Discontinued* RO155C
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 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
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x MK420, Maintenance kit for RO565
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 719, Drain Saddle Clamp / Valve
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x FRQ300, Flow Restrictor 300ML / min
1 x FRQ850, Flow Restrictor 850ML / min
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch

View Cart$10,652.44

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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