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1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
6 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
3 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x DB40, DI Resin Refill Bag for DI210, RD322
6 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
3 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
3 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x Special Filter Kit Koolermax dealer distribution kit
2 x 719, Drain Saddle Clamp / Valve
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
3 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
2 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
2 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
2 x 3rd stage C10 carbon block filter (replace every 6-12 months)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KT-103, Optional Manual Membrane Flush Valve
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
3 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x HK120-P-TK-220V for EURO 220V / 50Hz
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 310, 2nd stage CTA 10 US Membrane filter
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
2 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x 720, Feed Water Adapter with Needle Valve
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x KF750UP, SUBSTITUTE/Upgrade KOOLERMAX Faucet CHROME FINISH
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch

View Cart$7,903.70
Specials Log InCreate Account Checkout  Shopping Cart139 item(s)
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
6 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
3 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x DB40, DI Resin Refill Bag for DI210, RD322
6 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
3 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
3 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x Special Filter Kit Koolermax dealer distribution kit
2 x 719, Drain Saddle Clamp / Valve
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
3 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
2 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
2 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
2 x 3rd stage C10 carbon block filter (replace every 6-12 months)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KT-103, Optional Manual Membrane Flush Valve
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
3 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x HK120-P-TK-220V for EURO 220V / 50Hz
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 310, 2nd stage CTA 10 US Membrane filter
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
2 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x 720, Feed Water Adapter with Needle Valve
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x KF750UP, SUBSTITUTE/Upgrade KOOLERMAX Faucet CHROME FINISH
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch

View Cart$7,903.70

ATU TEE Union Connector Quick Connect QC Fitting [ATU]

$3.50

ATU TEE Union Connector Quick Connect QC Fitting



* ATU TEE Union Connector, Quick Connect

* Please choose size from the selection box below. Both numbers are tubing OD Outside Diameter. First number is Tee double side and second number is the single side. (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 ATU0404
* 3/8" Tube OD x 1/4" Tube OD ATU0604
* 3/8" Tube OD x 3/8" Tube OD ATU0606
* 1/2" Tube OD x 3/8" Tube OD ATU0706
* 1/2" Tube OD x 1/2" Tube OD ATU0707


* 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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