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

8 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
5 x	Parts, Ro Water System Installation Parts Bag 1/4"
2 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	Discontinued RO6ALK
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	bulk818, DI resin refill bags Di-Ionization media
5 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
7 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 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	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	Discontinued RD106
1 x	.K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
2 x	Special, Single Stage Housing Bracket Shell Connection Kit
3 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x	SC209, Specialty Filter Nitrate Removal Filter
3 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
2 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x	205, 5th stage final carbon filter
1 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
3 x	214, Clear Inline Filter Cartridge Empty Case
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
5 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
9 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
2 x	SW SHELL, Countertop SW1 Empty System Only No Filter
1 x	KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
4 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
5 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
6 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x	532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
2 x	MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
2 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	Discontinued RO585A
1 x	Special Filter Kit Koolermax dealer distribution kit
1 x	WH-5, Whole House Water Treatment Sediment Filter System 10" Big
3 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
4 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
3 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x	FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x	4th Stage Color Changing DI Filter SC207 for AR-104H
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	bulk213, Inline Carbon Filter
3 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
8 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	Discontinued RO585ERP
3 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	Discontinued RO585NTF
3 x	205, 3rd stage solid carbon block filter (replace every 12month)
2 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
2 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x	WH1134 Whole House Restaurant Filter System Sediment Carbon Big
3 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x	Discontinued RO585
1 x	326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	.K5NTF KoolerMax K5 RO System Shell without tank and faucet
2 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x	4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
4 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
2 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
3 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x	310, 2nd stage CTA 10 US Membrane filter
1 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x	bulkic21, Koolermax Inline Carbon Filter
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
3 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	.K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
5 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	706, Membrane Filter Casing Housing Assembly
3 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x	Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x	.K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x	3rd stage Special High Efficiency Membrane Filter HTFC-150
2 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
4 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x	SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x	335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x	213, 4th stage inline carbon filter (replace every 12 months)
1 x	SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x	324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
4 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
3 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
3 x	EMT-10, Empty Filter Cartridge Casing Housing
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x	.K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x	SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	4th stage Optional Refill bag #818 DI Resin Refill Bag
3 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
2 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	bulksf05, Koolermax Sediment Filter
2 x	673, Replacement UV Lamp Light for 602 (6 Watts)
1 x	Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x	.K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x	Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x	KT-103, Optional Manual Membrane Flush Valve
1 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
2 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x	204, 2nd stage GAC filter (replace every 6-12 months)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x	.K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
3 x	DB40, DI Resin Refill Bag for DI210, RD322
1 x	SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
2 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x	Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
1 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x	385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x	AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x	718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x	578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x	FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
2 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	316, 2nd stage CTA 16 US Membrane filter
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
1 x	CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x	277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x	WT-bac, Water Testing Kit, Bacteria Test
1 x	205, 3rd stage solid carbon block filter (replace every 12 month
1 x	568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
1 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	709, Automatic Shut Off Valve 4-way Four Way Valve
2 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x	4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x	3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x	721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x	Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x	718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x	FRQ550, Flow Restrictor 500 to 600ML / min
1 x	FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x	PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x	CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x	FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x	Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	752, DC Booster Pump w/ Transformer
1 x	732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
2 x	7044-K Union Tee Connector Fitting Compression type 1/4"
2 x	6044-combo Compression Type Fitting Elbow and Tee fitting
1 x	718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
1 x	FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x	CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x	FRQ850, Flow Restrictor 850ML / min
1 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x	FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x	FRQ300, Flow Restrictor 300ML / min
1 x	720, Feed Water Adapter with Needle Valve
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x	565, Digital Pressure Gauge Tester Monitor
1 x	741-14, Diverter Valve for Countertop Water Units
1 x	BBK10, Replacement Filter Big Blue Whole House WH-1134
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x	FRQ200, Flow Restrictor 200ML / min
1 x	723, Feed Water Adapter with Ball Valve

View Cart	$16,166.70