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

7 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x	913, 5th stage inline carbon filter (every 12 months)
4 x	1st stage SF05 sediment filter (replace every 6-12 months)
2 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
2 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
9 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x	SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x	FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x	HK120-P-TK for USA 110V / 60Hz
3 x	SW SHELL, Countertop SW1 Empty System Only No Filter
2 x	EMT-10, Empty Filter Cartridge Casing Housing
2 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
2 x	FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
2 x	673, Replacement UV Lamp Light for 602 (6 Watts)
4 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
2 x	755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x	TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
2 x	Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
2 x	PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
2 x	SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
3 x	PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
5 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
11 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
2 x	PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
1 x	UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
3 x	Special, Single Stage Housing Bracket Shell Connection Kit
2 x	SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
4 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	CDP6800T110V, AQUATEC Booster Pump Transformer 6840-2J03-B224
12 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
3 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x	PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
2 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x	TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
2 x	PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
5 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
3 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
8 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
2 x	SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x	TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x	709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
3 x	SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
5 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x	Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	723, Feed Water Adapter with Ball Valve
6 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
14 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
3 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
2 x	PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
4 x	752, DC Booster Pump w/ Transformer
1 x	UU Clips Pair Membrane to Filter, 2.5" to 2"
7 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x	FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
4 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
4 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x	TMR-AQT-2A, Transformer Power Supply Aquatec TACS114-48 for 8800
4 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
4 x	Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
2 x	CBV-38, Tank Ball Valve to 3/8 tubing
2 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
4 x	KT-103, Optional Manual Membrane Flush Valve
2 x	SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
2 x	7044-K Union Tee Connector Fitting Compression type 1/4"
3 x	PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
4 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
2 x	SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
2 x	ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
7 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x	SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
3 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
3 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	214, Clear Inline Filter Cartridge Empty Case
1 x	BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
2 x	SC207, Specialty Filter Refillable Color Changing DI Filter for
3 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
2 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
2 x	O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
3 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
4 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	IM60, Ice Maker or RV Water Filter, Inline Typle
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
3 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x	4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x	UU Clips Pair from Bracket to Membrane Filter
2 x	SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x	565, Digital Pressure Gauge Tester Monitor
2 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
2 x	SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
3 x	5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x	ERP1000 Aquatec Permeate Pump Reverse Osmosis RO System USA made
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	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
2 x	Special Filter Kit Koolermax dealer distribution kit
2 x	SC412, Water Softening Filter Calcium Magnesium Hardness Removal
2 x	741-14, Diverter Valve for Countertop Water Units
3 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x	SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
2 x	FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x	671C, Replacement UV Lamp Light for 609C (16 Watt)
3 x	PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x	741-38, Diverter Valve for RO DI Water Systems
1 x	6044-combo Compression Type Fitting Elbow and Tee fitting
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
2 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
2 x	799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x	CKV0402, Blue color Elbow Check Valve Elbow Type
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	719, Drain Saddle Clamp / Valve
2 x	SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x	773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
3 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x	Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x	385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
4 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	PE Tubing Tube Cutter
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
2 x	SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
4 x	Parts, Ro Water System Installation Parts Bag 1/4"
2 x	202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x	MKP, Maintenance kit for K5150P K6150P AR150P
1 x	756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
1 x	HK120-P-TK-220V for EURO 220V / 50Hz
1 x	AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
5 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
2 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x	DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x	225, 5th stage Inline Alkaline filter with clear case (annual)
1 x	709, Automatic Shut Off Valve 4-way Four Way Valve
1 x	FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x	UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x	AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x	DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
3 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
6 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x	TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
3 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
4 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
2 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x	Discontinued RO155C
1 x	720, Feed Water Adapter with Needle Valve
1 x	578, TDS Water Quality Meter tds-3
4 x	UC SHELL, Honeywell UC7000 Empty System Only No Filter
2 x	SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x	CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x	HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
2 x	706, Membrane Filter Casing Housing Assembly
1 x	TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x	SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
2 x	532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x	CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	Discontinued RO155
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
2 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
2 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
2 x	FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
2 x	.AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
2 x	3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
2 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	WH-5, Whole House Water Treatment Sediment Filter System 10" Big
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x	.SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x	205, 3rd stage solid carbon block filter (replace every 12 month
2 x	324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x	WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x	310, 2nd stage CTA 10 US Membrane filter (every 2-3 yrs)
2 x	204, 2nd stage GAC filter (replace every 6-12 months)
1 x	Discontinued RO585NTF
1 x	.K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x	KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x	4th Stage Color Changing DI Filter SC207 for AR-104H
1 x	.K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x	Discontinued RD106
1 x	4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x	213, 4th stage inline carbon filter (replace every 12 months)
1 x	DI210, Heavy-duty DI system for Aquarium and Reef
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K5
2 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x	WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x	.SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x	4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x	FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
2 x	MK8002, Maintenance kit for double membrane system RD322 RO260
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x	Discontinued RO585
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
2 x	KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x	335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x	.K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x	3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x	WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x	WS-150M, Whole House Water Softener
1 x	bulk205, Carbon Block Filter
1 x	316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x	4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x	MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x	.AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x	bulkc10, Koolermax Carbon Block Filter
1 x	Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x	.K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x	KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x	Discontinued RO585A
1 x	316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
1 x	WSACF-150T, Whole House Water Treatment ACF-150T

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