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1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x EMT-10, Empty Filter Cartridge Casing Housing
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
2 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 719, Drain Saddle Clamp / Valve
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
2 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 741-14, Diverter Valve for Countertop Water Units
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 565, Digital Pressure Gauge Tester Monitor
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x 578, TDS Water Quality Meter tds-3
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
2 x Parts, Ro Water System Installation Parts Bag 1/4"
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x 752, DC Booster Pump w/ Transformer
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x FRQ850, Flow Restrictor 850ML / min
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 214, Clear Inline Filter Cartridge Empty Case

View Cart$3,754.35
Specials Log InCreate Account Checkout  Shopping Cart112 item(s)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x EMT-10, Empty Filter Cartridge Casing Housing
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
2 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 719, Drain Saddle Clamp / Valve
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
2 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 741-14, Diverter Valve for Countertop Water Units
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 565, Digital Pressure Gauge Tester Monitor
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x 578, TDS Water Quality Meter tds-3
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
2 x Parts, Ro Water System Installation Parts Bag 1/4"
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x 752, DC Booster Pump w/ Transformer
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x FRQ850, Flow Restrictor 850ML / min
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 214, Clear Inline Filter Cartridge Empty Case

View Cart$3,754.35

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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