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

4 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
3 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x	326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
3 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
7 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	DB40, DI Resin Refill Bag for DI210, RD322
3 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
4 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x	KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x	550, Standard Chrome Steel Faucet with Spigot for Water Filter,
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
4 x	201, 1st stage sediment filter (replace every 6-12 months)
3 x	2nd stage C10 carbon block filter (replace every 6-12 months)
3 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	MKP, Maintenance kit for K5150P K6150P AR150P
1 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	205, 2nd stage carbon block filter (replace every 12 months)
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
2 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
2 x	752, DC Booster Pump w/ Transformer
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	205, 5th stage final carbon filter
1 x	KF750, Elite Series: Polish Chrome Drinking Water Faucet
2 x	Parts, Ro Water System Installation Parts Bag 1/4"
3 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
3 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
3 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x	.AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x	4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x	Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
3 x	Special, Single Stage Housing Bracket Shell Connection Kit
1 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
2 x	SW SHELL, Countertop SW1 Empty System Only No Filter
3 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
2 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
2 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	Discontinued RD150
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	.AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x	.AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
1 x	KT-103, Optional Manual Membrane Flush Valve
1 x	3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x	HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x	DI210, Heavy-duty DI system for Aquarium and Reef
1 x	Discontinued RO155
1 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x	Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x	1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
3 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x	SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x	BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	277, SED1005BB Big Blue 5 micron sediment filter 10"
2 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x	FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x	Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x	6044-combo Compression Type Fitting Elbow and Tee fitting
1 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x	Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x	FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x	MK8002, Maintenance kit for double membrane system RD322 RO260
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
2 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
2 x	EMT-10, Empty Filter Cartridge Casing Housing
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
2 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x	FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x	Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	578, TDS Water Quality Meter tds-3
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x	KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish

View Cart	$7,402.88

4 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
3 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x	326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
3 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
7 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	DB40, DI Resin Refill Bag for DI210, RD322
3 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
4 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x	KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x	550, Standard Chrome Steel Faucet with Spigot for Water Filter,
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
4 x	201, 1st stage sediment filter (replace every 6-12 months)
3 x	2nd stage C10 carbon block filter (replace every 6-12 months)
3 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	MKP, Maintenance kit for K5150P K6150P AR150P
1 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	205, 2nd stage carbon block filter (replace every 12 months)
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
2 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
2 x	752, DC Booster Pump w/ Transformer
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	205, 5th stage final carbon filter
1 x	KF750, Elite Series: Polish Chrome Drinking Water Faucet
2 x	Parts, Ro Water System Installation Parts Bag 1/4"
3 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
3 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
3 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x	.AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x	4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x	Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
3 x	Special, Single Stage Housing Bracket Shell Connection Kit
1 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
2 x	SW SHELL, Countertop SW1 Empty System Only No Filter
3 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
2 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
2 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	Discontinued RD150
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	.AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x	.AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
1 x	KT-103, Optional Manual Membrane Flush Valve
1 x	3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x	HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x	DI210, Heavy-duty DI system for Aquarium and Reef
1 x	Discontinued RO155
1 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x	Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x	1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
3 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x	SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x	BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	277, SED1005BB Big Blue 5 micron sediment filter 10"
2 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x	FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x	Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x	6044-combo Compression Type Fitting Elbow and Tee fitting
1 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x	Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x	FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x	MK8002, Maintenance kit for double membrane system RD322 RO260
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
2 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
2 x	EMT-10, Empty Filter Cartridge Casing Housing
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
2 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x	FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x	Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	578, TDS Water Quality Meter tds-3
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x	KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish

View Cart	$7,402.88