Log In Log In  |  Checkout   |  179 item(s)
3 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
3 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
4 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
2 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x 213, 4th stage inline carbon filter (replace every 12 months)
4 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
2 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
3 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
2 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x EMT-10, Empty Filter Cartridge Casing Housing
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
2 x 673, Replacement UV Lamp Light for 602 (6 Watts)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x *Discontinued* RO155
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 741-14, Diverter Valve for Countertop Water Units
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
4 x 205 2nd stage solid carbon block filter (replace every 12 month)
2 x SW SHELL, Countertop SW1 Empty System Only No Filter
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x *Discontinued* RO585ERP
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x bulksf05, Koolermax Sediment Filter
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x *Discontinued* RD150
1 x 723, Feed Water Adapter with Ball Valve
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x bulk818, DI resin refill bags Di-Ionization media
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
2 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x UU Clips Pair from Bracket to Membrane Filter
3 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
3 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
2 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x Special Filter Kit Koolermax dealer distribution kit
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x bulkc10, Koolermax Carbon Block Filter
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x 706, Membrane Filter Casing Housing Assembly
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G

View Cart$8,296.61
Specials Log InCreate Account Checkout  Shopping Cart179 item(s)
3 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
3 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
4 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
2 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x 213, 4th stage inline carbon filter (replace every 12 months)
4 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
2 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
3 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
2 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x EMT-10, Empty Filter Cartridge Casing Housing
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
2 x 673, Replacement UV Lamp Light for 602 (6 Watts)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x *Discontinued* RO155
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 741-14, Diverter Valve for Countertop Water Units
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
4 x 205 2nd stage solid carbon block filter (replace every 12 month)
2 x SW SHELL, Countertop SW1 Empty System Only No Filter
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x *Discontinued* RO585ERP
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x bulksf05, Koolermax Sediment Filter
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x *Discontinued* RD150
1 x 723, Feed Water Adapter with Ball Valve
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x bulk818, DI resin refill bags Di-Ionization media
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
2 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x UU Clips Pair from Bracket to Membrane Filter
3 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
3 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
2 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x Special Filter Kit Koolermax dealer distribution kit
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x bulkc10, Koolermax Carbon Block Filter
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x 706, Membrane Filter Casing Housing Assembly
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G

View Cart$8,296.61

AEU, Elbow Union Connector OD Quick Connect QC Fitting [AEU]

$3.00

AEU, Elbow Union Connector OD Quick Connect QC Fitting



* AEU, Elbow Union Connector TUBE OD w/ QC Quick Connect Fitting

* 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 AEU0404
* 3/8" Tube OD x 1/4" Tube OD AEU0604
* 3/8" Tube OD x 3/8" Tube OD AEU0606
* 1/2" Tube OD x 1/4" Tube OD AEU0704
* 1/2" Tube OD x 3/8" Tube OD AEU0706
* 1/2" Tube OD x 1/2" Tube OD AEU0707


* 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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