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	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x	4042-K Male Elbow Fitting Compression type(membrane housing use)
2 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
4 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
2 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x	FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
2 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
2 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
2 x	6044-combo Compression Type Fitting Elbow and Tee fitting
1 x	SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
2 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
2 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	.SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
3 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
2 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
2 x	MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	741-14, Diverter Valve for Countertop Water Units
4 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	913, 5th stage inline carbon filter (every 12 months)
1 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
3 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x	SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	DB40, DI Resin Refill Bag for DI210, RD322
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	709, Automatic Shut Off Valve 4-way Four Way Valve
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
2 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	7044-K Union Tee Connector Fitting Compression type 1/4"
1 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
1 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
2 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
2 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	719, Drain Saddle Clamp / Valve
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	1st stage SF05 sediment filter (replace every 6-12 months)
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x	720, Feed Water Adapter with Needle Valve
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
1 x	290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x	KT-103, Optional Manual Membrane Flush Valve
1 x	SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x	SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x	PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x	723, Feed Water Adapter with Ball Valve
1 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting

View Cart	$3,375.13

1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x	4042-K Male Elbow Fitting Compression type(membrane housing use)
2 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
4 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
2 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x	FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
2 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
2 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
2 x	6044-combo Compression Type Fitting Elbow and Tee fitting
1 x	SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
2 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
2 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	.SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
3 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
2 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
2 x	MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	741-14, Diverter Valve for Countertop Water Units
4 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	913, 5th stage inline carbon filter (every 12 months)
1 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
3 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x	SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	DB40, DI Resin Refill Bag for DI210, RD322
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	709, Automatic Shut Off Valve 4-way Four Way Valve
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x	AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
2 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	7044-K Union Tee Connector Fitting Compression type 1/4"
1 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
1 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
2 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
2 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	719, Drain Saddle Clamp / Valve
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	1st stage SF05 sediment filter (replace every 6-12 months)
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
2 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x	720, Feed Water Adapter with Needle Valve
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
1 x	290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x	KT-103, Optional Manual Membrane Flush Valve
1 x	SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x	SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x	PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x	NM-5103, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x	723, Feed Water Adapter with Ball Valve
1 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting

View Cart	$3,375.13