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1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
4 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
2 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x MK420, Maintenance kit for RO565
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 706, Membrane Filter Casing Housing Assembly
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260

View Cart$1,968.93
Specials Log InCreate Account Checkout  Shopping Cart55 item(s)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
4 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
2 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x MK420, Maintenance kit for RO565
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 706, Membrane Filter Casing Housing Assembly
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260

View Cart$1,968.93

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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