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1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x *Discontinued* RD102
1 x *Discontinued* RO585
1 x KM701C, Special Koolermax Filter Housing Canister CLEAR 1/4 FPT
1 x 701S, Filter Housing Honeywell White Color Single O-ring Type
2 x KF320UP, SUBSTITUTE/Upgrade to KYTON Faucet KF320 BRUSHED NICKEL
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x .RO585P 5-stage 85 gal/day Reverse osmosis system + booster pump
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x 214, Clear Inline DI Filter Cartridge Empty Case
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x KF612UP, SUBSTITUE/Upgrade to Kyton Faucet Oil Rubbed Bronze
1 x 578, TDS Water Quality Meter tds-3
2 x .RO260 AQUARIUM HYDROPONICS AEROPONICS RO 300GPD REVERSE OSMOSIS
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x *Discontinued* RO6ALK
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
2 x KF310UP, SUBSTITUTE/Upgrade to KYTON Faucet KF310 SHINY CHROME
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x 578b, TDS-3 Batteries for #578 TDS Water Quality Meter
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x .RD106P AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RODI+PUMP
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x .RD322 AQUARIUM REEF 300 GPD REVERSE OSMOSIS RO DI WATER SYSTEM
2 x KT-103, Optional Manual Membrane Flush Valve
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x KF750UP, Substitute/Upgrade KOOLERMAX Faucet SHINY CHROME FINISH
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x 706, Membrane Filter Casing Housing Assembly
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x KF335UP, SUBSTITUTE/Upgrade to KYTON Faucet KF335 PURE WHITE
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x KF351UP, Substitute/Upgrade to Solid Black Finish Drinking Water
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x *Discontinued* RD106
1 x .K6 KoolerMax 6STAGE Alkaline pH REVERSE OSMOSIS RO WATER FILTER
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x *Discontinued* RO585ERP

View Cart$3,937.99
Specials Log InCreate Account Checkout  Shopping Cart52 item(s)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x *Discontinued* RD102
1 x *Discontinued* RO585
1 x KM701C, Special Koolermax Filter Housing Canister CLEAR 1/4 FPT
1 x 701S, Filter Housing Honeywell White Color Single O-ring Type
2 x KF320UP, SUBSTITUTE/Upgrade to KYTON Faucet KF320 BRUSHED NICKEL
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x .RO585P 5-stage 85 gal/day Reverse osmosis system + booster pump
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x 214, Clear Inline DI Filter Cartridge Empty Case
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x KF612UP, SUBSTITUE/Upgrade to Kyton Faucet Oil Rubbed Bronze
1 x 578, TDS Water Quality Meter tds-3
2 x .RO260 AQUARIUM HYDROPONICS AEROPONICS RO 300GPD REVERSE OSMOSIS
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x *Discontinued* RO6ALK
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
2 x KF310UP, SUBSTITUTE/Upgrade to KYTON Faucet KF310 SHINY CHROME
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x 578b, TDS-3 Batteries for #578 TDS Water Quality Meter
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x .RD106P AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RODI+PUMP
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x .RD322 AQUARIUM REEF 300 GPD REVERSE OSMOSIS RO DI WATER SYSTEM
2 x KT-103, Optional Manual Membrane Flush Valve
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x KF750UP, Substitute/Upgrade KOOLERMAX Faucet SHINY CHROME FINISH
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x 706, Membrane Filter Casing Housing Assembly
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x KF335UP, SUBSTITUTE/Upgrade to KYTON Faucet KF335 PURE WHITE
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x KF351UP, Substitute/Upgrade to Solid Black Finish Drinking Water
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x *Discontinued* RD106
1 x .K6 KoolerMax 6STAGE Alkaline pH REVERSE OSMOSIS RO WATER FILTER
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x *Discontinued* RO585ERP

View Cart$3,937.99

AUC, Union Connector, Quick Connect type [AUC]

$3.00

AUC, Union Connector, Quick Connect type



* 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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