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2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
2 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
4 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x MK420, Maintenance kit for RO565
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x HK120-P-TK for USA 110V / 60Hz
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 752, DC Booster Pump w/ Transformer
1 x KT-103, Optional Manual Membrane Flush Valve
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
2 x 578, TDS Water Quality Meter tds-3
3 x Optional: 564 Membrane Filter Housing Wrench Opener
4 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
2 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
2 x 565, Digital Pressure Gauge Tester Monitor
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
2 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x *Discontinued* RO155C
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x PE Tubing Tube Cutter
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x WS-150M, Whole House Water Softener
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x *Discontinued* RO585A
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING

View Cart$12,464.44
Specials Log InCreate Account Checkout  Shopping Cart144 item(s)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
2 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
4 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x MK420, Maintenance kit for RO565
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x HK120-P-TK for USA 110V / 60Hz
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 752, DC Booster Pump w/ Transformer
1 x KT-103, Optional Manual Membrane Flush Valve
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
2 x 578, TDS Water Quality Meter tds-3
3 x Optional: 564 Membrane Filter Housing Wrench Opener
4 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
2 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
2 x 565, Digital Pressure Gauge Tester Monitor
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
2 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x *Discontinued* RO155C
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x PE Tubing Tube Cutter
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x WS-150M, Whole House Water Softener
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x *Discontinued* RO585A
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING

View Cart$12,464.44

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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