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	CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
2 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
3 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
4 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	IM60, Ice Maker or RV Water Filter, Inline Typle
1 x	4th Stage Color Changing DI Filter SC207 for AR-104H
1 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
3 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
2 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
2 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	.SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x	SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
4 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
2 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
2 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
3 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x	.RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x	4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	913, 5th stage inline carbon filter (every 12 months)
2 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x	DB40, DI Resin Refill Bag for DI210, RD322
2 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	bulk213, Inline Carbon Filter
2 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	.SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
3 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x	Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
3 x	Optional: 564 Membrane Filter Housing Wrench Opener
2 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x	HK120-P-TK-220V for EURO 220V / 50Hz
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	720, Feed Water Adapter with Needle Valve
1 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x	SW SHELL, Countertop SW1 Empty System Only No Filter
1 x	225, 5th stage Inline Alkaline filter with clear case (annual)
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x	Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x	SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
2 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
2 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	723, Feed Water Adapter with Ball Valve
2 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
2 x	Special, Single Stage Housing Bracket Shell Connection Kit
1 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x	718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x	732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x	205, 3rd stage solid carbon block filter (replace every 12 month
1 x	KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x	706, Membrane Filter Casing Housing Assembly
1 x	324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x	4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	Discontinued RD150
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x	KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x	HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x	bulk201, Sediment Filter
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
2 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
2 x	719, Drain Saddle Clamp / Valve
1 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	565, Digital Pressure Gauge Tester Monitor

View Cart	$6,862.77

1 x	CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
2 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
3 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
4 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	IM60, Ice Maker or RV Water Filter, Inline Typle
1 x	4th Stage Color Changing DI Filter SC207 for AR-104H
1 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
3 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
2 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
2 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	.SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x	SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
4 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
2 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
2 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
3 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x	.RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x	4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	913, 5th stage inline carbon filter (every 12 months)
2 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x	DB40, DI Resin Refill Bag for DI210, RD322
2 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	bulk213, Inline Carbon Filter
2 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	.SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
3 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x	Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
3 x	Optional: 564 Membrane Filter Housing Wrench Opener
2 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x	HK120-P-TK-220V for EURO 220V / 50Hz
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	720, Feed Water Adapter with Needle Valve
1 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x	SW SHELL, Countertop SW1 Empty System Only No Filter
1 x	225, 5th stage Inline Alkaline filter with clear case (annual)
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x	Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x	SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
2 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
2 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	723, Feed Water Adapter with Ball Valve
2 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
2 x	Special, Single Stage Housing Bracket Shell Connection Kit
1 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x	718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x	732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x	205, 3rd stage solid carbon block filter (replace every 12 month
1 x	KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x	706, Membrane Filter Casing Housing Assembly
1 x	324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x	4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	Discontinued RD150
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x	KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x	HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x	bulk201, Sediment Filter
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
2 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
2 x	719, Drain Saddle Clamp / Valve
1 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	565, Digital Pressure Gauge Tester Monitor

View Cart	$6,862.77