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	706, Membrane Filter Casing Housing Assembly
6 x	Parts, Ro Water System Installation Parts Bag 1/4"
4 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	bulk213, Inline Carbon Filter
11 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
4 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
5 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
9 x	201, 1st stage sediment filter (replace every 6-12 months)
11 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
9 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
5 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	913, 5th stage inline carbon filter (every 12 months)
4 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
11 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
5 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
3 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
6 x	2nd stage C10 carbon block filter (replace every 6-12 months)
5 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x	bulk205, Carbon Block Filter
11 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x	Special, Single Stage Housing Bracket Shell Connection Kit
7 x	3rd stage C10 carbon block filter (replace every 6-12 months)
4 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
3 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	204, 2nd stage GAC filter (replace every 6-12 months)
1 x	bulksf05, Koolermax Sediment Filter
6 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x	EMT-10, Empty Filter Cartridge Casing Housing
4 x	1st stage SF05 sediment filter (replace every 6-12 months)
3 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
4 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
7 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
3 x	214, Clear Inline Filter Cartridge Empty Case
2 x	bulkic21, Koolermax Inline Carbon Filter
5 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
3 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
7 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x	bulkc10, Koolermax Carbon Block Filter
2 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
6 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
3 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
3 x	MKP, Maintenance kit for K5150P K6150P AR150P
3 x	SW SHELL, Countertop SW1 Empty System Only No Filter
4 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
4 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
2 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
2 x	FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
3 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
4 x	752, DC Booster Pump w/ Transformer
4 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
3 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x	bulk201, Sediment Filter
1 x	324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
2 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
2 x	4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
2 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
2 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x	MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x	213, 5th stage inline carbon postfilter (replace every 12months)
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x	MK8002, Maintenance kit for double membrane system RD322 RO260
1 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	FRQ200, Flow Restrictor 200ML / min
1 x	AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x	WH1134 Whole House Restaurant Filter System Sediment Carbon Big
2 x	205, 3rd stage solid carbon block filter (replace every 12 month
2 x	PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x	.RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x	741-38, Diverter Valve for RO DI Water Systems
2 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x	CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x	KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x	277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x	756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
2 x	SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
2 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x	568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x	TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x	WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x	202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
2 x	709, Automatic Shut Off Valve 4-way Four Way Valve
2 x	PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
2 x	719, Drain Saddle Clamp / Valve
1 x	DB40, DI Resin Refill Bag for DI210, RD322
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
2 x	SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
2 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x	CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
2 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	Discontinued RD150
2 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x	HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x	Special Filter Kit Koolermax dealer distribution kit
1 x	Discontinued RD106
2 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
2 x	723, Feed Water Adapter with Ball Valve
1 x	Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x	CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x	TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x	WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x	SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
2 x	KT-103, Optional Manual Membrane Flush Valve
1 x	CDP6800T110V, AQUATEC Booster Pump Transformer 6840-2J03-B224
1 x	718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x	4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x	1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x	FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x	7044-K Union Tee Connector Fitting Compression type 1/4"
1 x	773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
2 x	SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x	FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x	.AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x	SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x	SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x	ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x	720, Feed Water Adapter with Needle Valve
1 x	213, 4th stage inline carbon filter (replace every 12 months)
1 x	MK420, Maintenance kit for RO565
2 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x	799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x	WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
1 x	.AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	741-14, Diverter Valve for Countertop Water Units
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
2 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
1 x	HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x	AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
2 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x	4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x	Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x	FRQ550, Flow Restrictor 500 to 600ML / min
1 x	717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x	673, Replacement UV Lamp Light for 602 (6 Watts)
1 x	TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x	SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x	225, 5th stage Inline Alkaline filter with clear case (annual)
1 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x	718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x	550, Standard Chrome Steel Faucet with Spigot for Water Dispense
1 x	bulk818, DI resin refill bags Di-Ionization media
1 x	HK120-P-TK for USA 110V / 60Hz
1 x	316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x	SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x	335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x	FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x	532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x	DI210, Heavy-duty DI system for Aquarium and Reef
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	TMR-AQT-2A, Transformer Power Supply Aquatec TACS114-48 for 8800
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA

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