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

2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	Discontinued RO585NTF
6 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x	bulk213, Inline Carbon Filter
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	913, 5th stage inline carbon filter (every 12 months)
3 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
5 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
2 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
5 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
2 x	Parts, Ro Water System Installation Parts Bag 1/4"
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
2 x	SC412, Water Softening Filter Calcium Magnesium Hardness Removal
2 x	SC207, Specialty Filter Refillable Color Changing DI Filter for
2 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	.AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x	550, Standard Chrome Steel Faucet with Spigot for Water Dispense
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x	7044-K Union Tee Connector Fitting Compression type 1/4"
1 x	.K6NTF KoolerMax K6ALK RO shell without tank and faucet
2 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	565, Digital Pressure Gauge Tester Monitor
1 x	WH-20, Whole House Water Treatment Carbon Block Filter System Bi
2 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x	bulk201, Sediment Filter
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x	AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
3 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x	SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x	Discontinued RO585
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x	KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
2 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	Discontinued RO585ERP
3 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
2 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x	.SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x	.K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	6th Stage pn215 Refillable inline DI filter (color change)
2 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x	WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x	SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x	WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x	.AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	.K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	213, 4th stage inline carbon filter (replace every 12 months)
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x	335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x	.K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x	Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	bulk818, DI resin refill bags Di-Ionization media
1 x	SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x	752, DC Booster Pump w/ Transformer
1 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x	Special Filter Kit Koolermax dealer distribution kit
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x	KT-103, Optional Manual Membrane Flush Valve
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x	1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting

View Cart	$8,532.84

2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	Discontinued RO585NTF
6 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x	bulk213, Inline Carbon Filter
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	913, 5th stage inline carbon filter (every 12 months)
3 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
5 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
2 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
5 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
2 x	Parts, Ro Water System Installation Parts Bag 1/4"
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
2 x	SC412, Water Softening Filter Calcium Magnesium Hardness Removal
2 x	SC207, Specialty Filter Refillable Color Changing DI Filter for
2 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	.AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x	550, Standard Chrome Steel Faucet with Spigot for Water Dispense
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x	7044-K Union Tee Connector Fitting Compression type 1/4"
1 x	.K6NTF KoolerMax K6ALK RO shell without tank and faucet
2 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	565, Digital Pressure Gauge Tester Monitor
1 x	WH-20, Whole House Water Treatment Carbon Block Filter System Bi
2 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x	bulk201, Sediment Filter
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x	AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
3 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x	SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x	Discontinued RO585
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x	KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
2 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	Discontinued RO585ERP
3 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
2 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x	.SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x	.K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	6th Stage pn215 Refillable inline DI filter (color change)
2 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x	WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x	SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x	WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x	.AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	.K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	213, 4th stage inline carbon filter (replace every 12 months)
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x	335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x	.K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x	Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	bulk818, DI resin refill bags Di-Ionization media
1 x	SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x	752, DC Booster Pump w/ Transformer
1 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x	Special Filter Kit Koolermax dealer distribution kit
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x	KT-103, Optional Manual Membrane Flush Valve
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x	1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting

View Cart	$8,532.84