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1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x MK8002, Maintenance kit for double membrane system RD322 RO260
2 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x CDP6800T110V, AQUATEC Booster Pump Transformer 6840-2J03-B224
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x 752, DC Booster Pump w/ Transformer
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO

View Cart$2,862.83
Specials Log InCreate Account Checkout  Shopping Cart75 item(s)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x MK8002, Maintenance kit for double membrane system RD322 RO260
2 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Aeroponics HighPressure Booster Pump Aquatec CDP5853 Transformer
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x CDP6800T110V, AQUATEC Booster Pump Transformer 6840-2J03-B224
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x 752, DC Booster Pump w/ Transformer
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO

View Cart$2,862.83

ABU, Bulkhead Union Connector [ABU]

$4.50

ABU, Bulkhead Union Connector



* 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:

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