Log In Log In  |  Checkout   |  62 item(s)
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x DB40, DI Resin Refill Bag for DI210, RD322
2 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x Special Filter Kit Koolermax dealer distribution kit
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 741-14, Diverter Valve for Countertop Water Units
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 706, Membrane Filter Casing Housing Assembly
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
2 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
2 x 719, Drain Saddle Clamp / Valve
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 578, TDS Water Quality Meter tds-3
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x FRQ420, Flow Restrictor 420ML / min
1 x 565, Digital Pressure Gauge Tester Monitor
1 x UU Clips Pair from Bracket to Membrane Filter
2 x FRQ850, Flow Restrictor 850ML / min
1 x FRQ300, Flow Restrictor 300ML / min
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
2 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x *Discontinued* RD150

View Cart$1,565.89
Specials Log InCreate Account Checkout  Shopping Cart62 item(s)
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x DB40, DI Resin Refill Bag for DI210, RD322
2 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x Special Filter Kit Koolermax dealer distribution kit
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 741-14, Diverter Valve for Countertop Water Units
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 706, Membrane Filter Casing Housing Assembly
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
2 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
2 x 719, Drain Saddle Clamp / Valve
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 578, TDS Water Quality Meter tds-3
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x FRQ420, Flow Restrictor 420ML / min
1 x 565, Digital Pressure Gauge Tester Monitor
1 x UU Clips Pair from Bracket to Membrane Filter
2 x FRQ850, Flow Restrictor 850ML / min
1 x FRQ300, Flow Restrictor 300ML / min
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
2 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x *Discontinued* RD150

View Cart$1,565.89

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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