ABU, Bulkhead Union Connector [ABU]

$4.50

* 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:

Reviews

1 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
2 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	741-38, Diverter Valve for RO DI Water Systems
1 x	709, Automatic Shut Off Valve 4-way Four Way Valve
1 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
5 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x	KT-103, Optional Manual Membrane Flush Valve
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x	Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x	7044-K Union Tee Connector Fitting Compression type 1/4"
1 x	720, Feed Water Adapter with Needle Valve
1 x	PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x	723, Feed Water Adapter with Ball Valve
3 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	741-14, Diverter Valve for Countertop Water Units
1 x	4044-K qty 2 Male Elbow Fitting Compression type 1/4"
5 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	.AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x	SW SHELL, Countertop SW1 Empty System Only No Filter
2 x	205, 3rd stage solid carbon block filter (replace every 12month)
2 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x	Discontinued RO6ALK
1 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x	.K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x	214, Clear Inline Filter Cartridge Empty Case
3 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	.K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x	KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x	385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	.K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x	Discontinued RO585ERP
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
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	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
3 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	532wpg, PAE RO water pressure white tank bladder gauge valve 4G
3 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	213, 4th stage inline carbon filter (replace every 12 months)
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x	326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x	205, 5th stage final carbon filter
1 x	EMT-10, Empty Filter Cartridge Casing Housing
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
3 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	Discontinued RO585A
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	225, 5th stage Inline Alkaline filter with clear case (annual)
2 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	Special, Single Stage Housing Bracket Shell Connection Kit
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x	Discontinued RD106
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	.K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x	.K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	Discontinued RO585
1 x	KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x	Discontinued RO585NTF
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	.K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	706, Membrane Filter Casing Housing Assembly
1 x	.K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT

View Cart	$7,089.03

1 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
2 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	741-38, Diverter Valve for RO DI Water Systems
1 x	709, Automatic Shut Off Valve 4-way Four Way Valve
1 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
5 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x	KT-103, Optional Manual Membrane Flush Valve
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x	Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x	7044-K Union Tee Connector Fitting Compression type 1/4"
1 x	720, Feed Water Adapter with Needle Valve
1 x	PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x	723, Feed Water Adapter with Ball Valve
3 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	741-14, Diverter Valve for Countertop Water Units
1 x	4044-K qty 2 Male Elbow Fitting Compression type 1/4"
5 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	.AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x	SW SHELL, Countertop SW1 Empty System Only No Filter
2 x	205, 3rd stage solid carbon block filter (replace every 12month)
2 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x	Discontinued RO6ALK
1 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x	.K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x	214, Clear Inline Filter Cartridge Empty Case
3 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	.K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x	KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x	385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	.K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x	Discontinued RO585ERP
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
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	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
3 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	532wpg, PAE RO water pressure white tank bladder gauge valve 4G
3 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	213, 4th stage inline carbon filter (replace every 12 months)
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x	326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x	205, 5th stage final carbon filter
1 x	EMT-10, Empty Filter Cartridge Casing Housing
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
3 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	Discontinued RO585A
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	225, 5th stage Inline Alkaline filter with clear case (annual)
2 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	Special, Single Stage Housing Bracket Shell Connection Kit
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x	Discontinued RD106
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	.K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x	.K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	Discontinued RO585
1 x	KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x	Discontinued RO585NTF
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	.K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	706, Membrane Filter Casing Housing Assembly
1 x	.K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT

View Cart	$7,089.03