Log In Log In  |  Checkout   |  57 item(s)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
2 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
2 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 706, Membrane Filter Casing Housing Assembly
1 x TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 752, DC Booster Pump w/ Transformer
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 720, Feed Water Adapter with Needle Valve
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
4 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x MK420, Maintenance kit for RO565
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x *Discontinued* RO585
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET

View Cart$5,029.38
Specials Log InCreate Account Checkout  Shopping Cart57 item(s)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
2 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
2 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 706, Membrane Filter Casing Housing Assembly
1 x TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 752, DC Booster Pump w/ Transformer
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 720, Feed Water Adapter with Needle Valve
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
4 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x MK420, Maintenance kit for RO565
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x *Discontinued* RO585
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET

View Cart$5,029.38

ABU, Bulkhead Union Connector [ABU]

$4.50

ABU, Bulkhead Union Connector



* ABU, Bulkhead Union Connector

* Please choose size from the selection box below. First number is tubing OD Outside Diameter and second number is NPT National Pipe Thread. (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" NPTF Thread ABU0404
* 1/4" Tube OD x 3/8" NPTF Thread ABU0406
* 3/8" Tube OD x 1/4" NPTF Thread ABU0604
* 3/8" Tube OD x 3/8" NPTF Thread ABU0606
* 1/2" Tube OD x 1/2" NPTF Thread ABU0707


* 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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