Log In Log In  |  Checkout   |  94 item(s)
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x 741-14, Diverter Valve for Countertop Water Units
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x *Discontinued* RO585ERP
3 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x *Discontinued* RD106
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x *Discontinued* RO155
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
2 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
2 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x KT-103, Optional Manual Membrane Flush Valve
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x *Discontinued* RO585A
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x *Discontinued* RO155C
1 x *Discontinued* RO6ALK
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x 719, Drain Saddle Clamp / Valve
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)

View Cart$5,802.99
Specials Log InCreate Account Checkout  Shopping Cart94 item(s)
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x 741-14, Diverter Valve for Countertop Water Units
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x *Discontinued* RO585ERP
3 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x *Discontinued* RD106
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x *Discontinued* RO155
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
2 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
2 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x KT-103, Optional Manual Membrane Flush Valve
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x *Discontinued* RO585A
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x *Discontinued* RO155C
1 x *Discontinued* RO6ALK
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x 719, Drain Saddle Clamp / Valve
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)

View Cart$5,802.99

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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