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

3 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
3 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
2 x	MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
4 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
2 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x	PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x	FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x	bulk818, DI resin refill bags Di-Ionization media
3 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	.K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x	CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x	Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x	DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
2 x	FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
2 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x	213, 5th stage inline carbon postfilter (replace every 12months)
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
2 x	799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x	324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
2 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
2 x	Optional: 564 Membrane Filter Housing Wrench Opener
2 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	bulk213, Inline Carbon Filter
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x	Discontinued RO585NTF
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
2 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
3 x	752, DC Booster Pump w/ Transformer
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
2 x	Parts, Ro Water System Installation Parts Bag 1/4"
2 x	SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
2 x	KT-103, Optional Manual Membrane Flush Valve
1 x	Special Filter Kit Koolermax dealer distribution kit
2 x	FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x	SW SHELL, Countertop SW1 Empty System Only No Filter
2 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
1 x	FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x	bulkc10, Koolermax Carbon Block Filter
1 x	Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x	TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x	1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x	4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x	DB40, DI Resin Refill Bag for DI210, RD322
1 x	Discontinued RO155
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	FRQ200, Flow Restrictor 200ML / min
2 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	FRQ550, Flow Restrictor 500 to 600ML / min
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	720, Feed Water Adapter with Needle Valve
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
3 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	Discontinued RO585ERP
2 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x	O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
2 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x	773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	bulksf05, Koolermax Sediment Filter
1 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x	TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x	.K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x	ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x	671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	FRQ420, Flow Restrictor 420ML / min
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	PE Tubing Tube Cutter
1 x	.AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224

View Cart	$10,241.24

3 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
3 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
2 x	MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
4 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
2 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x	PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x	FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x	bulk818, DI resin refill bags Di-Ionization media
3 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
2 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	.K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x	CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x	Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x	DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
2 x	FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
2 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x	213, 5th stage inline carbon postfilter (replace every 12months)
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
2 x	799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x	324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
2 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
2 x	Optional: 564 Membrane Filter Housing Wrench Opener
2 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	bulk213, Inline Carbon Filter
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x	Discontinued RO585NTF
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
2 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
3 x	752, DC Booster Pump w/ Transformer
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
2 x	Parts, Ro Water System Installation Parts Bag 1/4"
2 x	SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
2 x	KT-103, Optional Manual Membrane Flush Valve
1 x	Special Filter Kit Koolermax dealer distribution kit
2 x	FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x	SW SHELL, Countertop SW1 Empty System Only No Filter
2 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
1 x	FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x	bulkc10, Koolermax Carbon Block Filter
1 x	Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x	TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x	1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x	4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x	DB40, DI Resin Refill Bag for DI210, RD322
1 x	Discontinued RO155
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	FRQ200, Flow Restrictor 200ML / min
2 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	FRQ550, Flow Restrictor 500 to 600ML / min
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	720, Feed Water Adapter with Needle Valve
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
3 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	Discontinued RO585ERP
2 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x	O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
2 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x	773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	bulksf05, Koolermax Sediment Filter
1 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x	TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x	.K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x	ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x	671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	FRQ420, Flow Restrictor 420ML / min
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	PE Tubing Tube Cutter
1 x	.AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224

View Cart	$10,241.24