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3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x bulksf05, Koolermax Sediment Filter
1 x *Discontinued* RD106
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x 578, TDS Water Quality Meter tds-3
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x bulkc10, Koolermax Carbon Block Filter
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x *Discontinued* RD102
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x bulk818, DI resin refill bags Di-Ionization media
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK

View Cart$7,342.54
Specials Log InCreate Account Checkout  Shopping Cart130 item(s)
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x bulksf05, Koolermax Sediment Filter
1 x *Discontinued* RD106
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x 578, TDS Water Quality Meter tds-3
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x bulkc10, Koolermax Carbon Block Filter
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x *Discontinued* RD102
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
2 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x bulk818, DI resin refill bags Di-Ionization media
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK

View Cart$7,342.54

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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