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	.K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x	SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x	PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	720, Feed Water Adapter with Needle Valve
1 x	3rd stage C10 carbon block filter (replace every 6-12 months)
2 x	SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
4 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x	SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
2 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
2 x	PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
2 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	.K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x	KT-103, Optional Manual Membrane Flush Valve
1 x	578, TDS Water Quality Meter tds-3
3 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	.K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
3 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
2 x	201, 1st stage sediment filter (replace every 6-12 months)
2 x	SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x	FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
2 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	Discontinued RO585
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
4 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x	.K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
3 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
2 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	Discontinued RO155
1 x	706, Membrane Filter Casing Housing Assembly
1 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x	752, DC Booster Pump w/ Transformer
3 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
2 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	MK8002, Maintenance kit for double membrane system RD322 RO260
1 x	4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x	Discontinued RD106
3 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	Discontinued RO585A
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	.K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x	FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x	bulk818, DI resin refill bags Di-Ionization media
2 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x	AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x	AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x	WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x	5th Stage pn215 Refillable inline DI filter (color change)
1 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	673, Replacement UV Lamp Light for 602 (6 Watts)
1 x	755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x	SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x	FRQ550, Flow Restrictor 500 to 600ML / min
1 x	MK420, Maintenance kit for RO565
1 x	CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x	204, 2nd stage GAC filter (replace every 6-12 months)
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x	Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155

View Cart	$7,017.69

1 x	.K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x	SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x	PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	720, Feed Water Adapter with Needle Valve
1 x	3rd stage C10 carbon block filter (replace every 6-12 months)
2 x	SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
4 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x	SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
2 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
2 x	PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
2 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	.K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x	KT-103, Optional Manual Membrane Flush Valve
1 x	578, TDS Water Quality Meter tds-3
3 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	.K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
3 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
2 x	201, 1st stage sediment filter (replace every 6-12 months)
2 x	SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x	FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
2 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	Discontinued RO585
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
4 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x	.K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
3 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
2 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	Discontinued RO155
1 x	706, Membrane Filter Casing Housing Assembly
1 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x	752, DC Booster Pump w/ Transformer
3 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
2 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	MK8002, Maintenance kit for double membrane system RD322 RO260
1 x	4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x	Discontinued RD106
3 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	Discontinued RO585A
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	.K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x	FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x	bulk818, DI resin refill bags Di-Ionization media
2 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x	AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x	AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x	WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x	5th Stage pn215 Refillable inline DI filter (color change)
1 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	673, Replacement UV Lamp Light for 602 (6 Watts)
1 x	755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x	SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x	FRQ550, Flow Restrictor 500 to 600ML / min
1 x	MK420, Maintenance kit for RO565
1 x	CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x	204, 2nd stage GAC filter (replace every 6-12 months)
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x	Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155

View Cart	$7,017.69