Log In Log In  |  Checkout   |  89 item(s)
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x *Discontinued* RO585A
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
3 x 201, 1st stage sediment filter (replace every 6-12 months)
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x *Discontinued* RD106
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
3 x Optional: 564 Membrane Filter Housing Wrench Opener
4 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x KT-103, Optional Manual Membrane Flush Valve
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
2 x 752, DC Booster Pump w/ Transformer
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x *Discontinued* RO6ALK
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x 719, Drain Saddle Clamp / Valve
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)

View Cart$3,668.50
Specials Log InCreate Account Checkout  Shopping Cart89 item(s)
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x *Discontinued* RO585A
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
3 x 201, 1st stage sediment filter (replace every 6-12 months)
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x *Discontinued* RD106
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
3 x Optional: 564 Membrane Filter Housing Wrench Opener
4 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x KT-103, Optional Manual Membrane Flush Valve
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
2 x 752, DC Booster Pump w/ Transformer
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x *Discontinued* RO6ALK
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x 719, Drain Saddle Clamp / Valve
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)

View Cart$3,668.50

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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