Log In Log In  |  Checkout   |  78 item(s)
3 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x Special Filter Kit Koolermax dealer distribution kit
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x *Discontinued* RD106
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
3 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
2 x 201, 1st stage sediment filter (replace every 6-12 months)
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
2 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
2 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x *Discontinued* RO155
1 x bulk818, DI resin refill bags Di-Ionization media
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x bulk213, Inline Carbon Filter
1 x UU Clips Pair from Bracket to Membrane Filter
1 x Special, Single Stage Housing Bracket Shell Connection Kit

View Cart$4,202.43
Specials Log InCreate Account Checkout  Shopping Cart78 item(s)
3 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x Special Filter Kit Koolermax dealer distribution kit
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x *Discontinued* RD106
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
3 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
2 x 201, 1st stage sediment filter (replace every 6-12 months)
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
2 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
2 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x *Discontinued* RO155
1 x bulk818, DI resin refill bags Di-Ionization media
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x bulk213, Inline Carbon Filter
1 x UU Clips Pair from Bracket to Membrane Filter
1 x Special, Single Stage Housing Bracket Shell Connection Kit

View Cart$4,202.43

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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