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	TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
6 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
4 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x	FRQ200, Flow Restrictor 200ML / min
3 x	205, 3rd stage solid carbon block filter (replace every 12month)
4 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
3 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	SC207, Specialty Filter Refillable Color Changing DI Filter for
2 x	FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x	SC209, Specialty Filter Nitrate Removal Filter
3 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	741-38, Diverter Valve for RO DI Water Systems
2 x	214, Clear Inline Filter Cartridge Empty Case
1 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
4 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
2 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	WS-150M, Whole House Water Softener
1 x	SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x	PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
3 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x	ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x	Discontinued RO585NTF
1 x	Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
2 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	AQF-600-105, Flow Meter Panel Mount 1/2" MPT
2 x	277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
2 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	6th Stage pn215 Refillable inline DI filter (color change)
2 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x	290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x	FRQ550, Flow Restrictor 500 to 600ML / min
5 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x	.K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x	385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x	PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x	UU Clips Pair from Bracket to Membrane Filter
1 x	WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
5 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	bulksf05, Koolermax Sediment Filter
2 x	SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
2 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
2 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x	Discontinued RO585ERP
1 x	.K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x	Discontinued RO6ALK
2 x	SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x	4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x	TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
2 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x	EMT-10, Empty Filter Cartridge Casing Housing
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	706, Membrane Filter Casing Housing Assembly
1 x	213, 5th stage inline carbon postfilter (replace every 12months)
1 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
2 x	FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x	913, 5th stage inline carbon filter (every 12 months)
4 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x	FRQ420, Flow Restrictor 420ML / min
1 x	773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x	741-14, Diverter Valve for Countertop Water Units
1 x	Discontinued RO585
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x	673, Replacement UV Lamp Light for 602 (6 Watts)
1 x	PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x	Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x	205, 3rd stage solid carbon block filter (replace every 12 month
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
1 x	799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x	717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x	718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x	.K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x	752, DC Booster Pump w/ Transformer
1 x	Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x	HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x	Discontinued RO155C
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x	Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
1 x	TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug

View Cart	$11,090.90

1 x	TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
6 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
4 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x	FRQ200, Flow Restrictor 200ML / min
3 x	205, 3rd stage solid carbon block filter (replace every 12month)
4 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
3 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	SC207, Specialty Filter Refillable Color Changing DI Filter for
2 x	FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x	SC209, Specialty Filter Nitrate Removal Filter
3 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	741-38, Diverter Valve for RO DI Water Systems
2 x	214, Clear Inline Filter Cartridge Empty Case
1 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
4 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
2 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	WS-150M, Whole House Water Softener
1 x	SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x	PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
3 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x	ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x	Discontinued RO585NTF
1 x	Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
2 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	AQF-600-105, Flow Meter Panel Mount 1/2" MPT
2 x	277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
2 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	6th Stage pn215 Refillable inline DI filter (color change)
2 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x	290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x	FRQ550, Flow Restrictor 500 to 600ML / min
5 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x	.K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x	385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x	PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x	UU Clips Pair from Bracket to Membrane Filter
1 x	WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
5 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	bulksf05, Koolermax Sediment Filter
2 x	SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
2 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
2 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x	Discontinued RO585ERP
1 x	.K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x	Discontinued RO6ALK
2 x	SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x	4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x	TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
2 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x	EMT-10, Empty Filter Cartridge Casing Housing
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	706, Membrane Filter Casing Housing Assembly
1 x	213, 5th stage inline carbon postfilter (replace every 12months)
1 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
2 x	FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x	913, 5th stage inline carbon filter (every 12 months)
4 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x	FRQ420, Flow Restrictor 420ML / min
1 x	773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x	741-14, Diverter Valve for Countertop Water Units
1 x	Discontinued RO585
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x	673, Replacement UV Lamp Light for 602 (6 Watts)
1 x	PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x	Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x	205, 3rd stage solid carbon block filter (replace every 12 month
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
1 x	799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x	717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x	718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x	.K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x	752, DC Booster Pump w/ Transformer
1 x	Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x	HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x	Discontinued RO155C
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x	Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
1 x	TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug

View Cart	$11,090.90