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2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
4 x 205 2nd stage solid carbon block filter (replace every 12 month)
3 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x bulk205, Carbon Block Filter
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
3 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
2 x 6th Stage pn215 Refillable inline DI filter (color change)
4 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x bulk201, Sediment Filter
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x bulkic21, Koolermax Inline Carbon Filter
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
3 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
4 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 706, Membrane Filter Casing Housing Assembly
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Special, Single Stage Housing Bracket Shell Connection Kit
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x Special Filter Kit Koolermax dealer distribution kit
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 723, Feed Water Adapter with Ball Valve
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x bulkc10, Koolermax Carbon Block Filter
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x KT-103, Optional Manual Membrane Flush Valve
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 752, DC Booster Pump w/ Transformer
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable

View Cart$6,086.36
Specials Log InCreate Account Checkout  Shopping Cart135 item(s)
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
4 x 205 2nd stage solid carbon block filter (replace every 12 month)
3 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
3 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x bulk205, Carbon Block Filter
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
3 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
2 x 6th Stage pn215 Refillable inline DI filter (color change)
4 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x bulk201, Sediment Filter
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x bulkic21, Koolermax Inline Carbon Filter
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
3 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
4 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 706, Membrane Filter Casing Housing Assembly
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Special, Single Stage Housing Bracket Shell Connection Kit
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x Special Filter Kit Koolermax dealer distribution kit
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 723, Feed Water Adapter with Ball Valve
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x bulkc10, Koolermax Carbon Block Filter
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x KT-103, Optional Manual Membrane Flush Valve
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 752, DC Booster Pump w/ Transformer
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable

View Cart$6,086.36

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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