Log In Log In  |  Checkout   |  72 item(s)
2 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x FRQ300, Flow Restrictor 300ML / min
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FRQ850, Flow Restrictor 850ML / min
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 706, Membrane Filter Casing Housing Assembly
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x FRQ420, Flow Restrictor 420ML / min
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 752, DC Booster Pump w/ Transformer
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
2 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 719, Drain Saddle Clamp / Valve
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x 720, Feed Water Adapter with Needle Valve
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x 723, Feed Water Adapter with Ball Valve
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x FRQ200, Flow Restrictor 200ML / min
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING

View Cart$1,197.98
Specials Log InCreate Account Checkout  Shopping Cart72 item(s)
2 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x FRQ300, Flow Restrictor 300ML / min
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FRQ850, Flow Restrictor 850ML / min
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 706, Membrane Filter Casing Housing Assembly
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x FRQ420, Flow Restrictor 420ML / min
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 752, DC Booster Pump w/ Transformer
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
2 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 719, Drain Saddle Clamp / Valve
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x 720, Feed Water Adapter with Needle Valve
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x 718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x 723, Feed Water Adapter with Ball Valve
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x FRQ200, Flow Restrictor 200ML / min
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING

View Cart$1,197.98

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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