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	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x	578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
2 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
3 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x	SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x	706, Membrane Filter Casing Housing Assembly
1 x	FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x	Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x	FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x	565, Digital Pressure Gauge Tester Monitor
1 x	KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x	Special, Single Stage Housing Bracket Shell Connection Kit
1 x	UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
3 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	752, DC Booster Pump w/ Transformer
2 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	KT-103, Optional Manual Membrane Flush Valve
1 x	ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x	UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x	UU Clips Pair from Bracket to Membrane Filter
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	578, TDS Water Quality Meter tds-3
1 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x	UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x	213, 4th stage inline carbon filter (replace every 12 months)
1 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
2 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x	KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x	673, Replacement UV Lamp Light for 602 (6 Watts)
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x	335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x	KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	550, Standard Chrome Steel Faucet with Spigot for Water Dispense
1 x	671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x	TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x	EMT-10, Empty Filter Cartridge Casing Housing
1 x	277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x	755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
2 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	741-14, Diverter Valve for Countertop Water Units
1 x	FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x	SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	BBK10, Replacement Filter Big Blue Whole House WH-1134
2 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x	PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
2 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	PE Tubing Tube Cutter
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	SW SHELL, Countertop SW1 Empty System Only No Filter
1 x	4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x	AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
1 x	FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x	6044-combo Compression Type Fitting Elbow and Tee fitting
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	4042-K Male Elbow Fitting Compression type(membrane housing use)

View Cart	$3,458.72

2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x	578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
2 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
3 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x	SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x	706, Membrane Filter Casing Housing Assembly
1 x	FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x	Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x	FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x	565, Digital Pressure Gauge Tester Monitor
1 x	KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x	Special, Single Stage Housing Bracket Shell Connection Kit
1 x	UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
3 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	752, DC Booster Pump w/ Transformer
2 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	KT-103, Optional Manual Membrane Flush Valve
1 x	ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
1 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x	UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x	UU Clips Pair from Bracket to Membrane Filter
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	578, TDS Water Quality Meter tds-3
1 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x	UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x	213, 4th stage inline carbon filter (replace every 12 months)
1 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
2 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x	KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x	673, Replacement UV Lamp Light for 602 (6 Watts)
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x	335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x	KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	550, Standard Chrome Steel Faucet with Spigot for Water Dispense
1 x	671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x	TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x	EMT-10, Empty Filter Cartridge Casing Housing
1 x	277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x	755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
2 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	741-14, Diverter Valve for Countertop Water Units
1 x	FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x	SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	BBK10, Replacement Filter Big Blue Whole House WH-1134
2 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x	PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
2 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	PE Tubing Tube Cutter
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x	SW SHELL, Countertop SW1 Empty System Only No Filter
1 x	4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	CBV-38, Tank Ball Valve to 3/8 tubing
1 x	2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x	AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	N-14-1M, Nipple Fitting connector between standard RO housing
1 x	FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x	6044-combo Compression Type Fitting Elbow and Tee fitting
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	4042-K Male Elbow Fitting Compression type(membrane housing use)

View Cart	$3,458.72