Log In Log In  |  Checkout   |  78 item(s)
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
4 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
4 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
2 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x *Discontinued* RO155
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 752, DC Booster Pump w/ Transformer
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x bulksf05, Koolermax Sediment Filter
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1

View Cart$6,406.45
Specials Log InCreate Account Checkout  Shopping Cart78 item(s)
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
4 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
4 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
2 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x *Discontinued* RO155
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 752, DC Booster Pump w/ Transformer
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x bulksf05, Koolermax Sediment Filter
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1

View Cart$6,406.45

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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