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3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
2 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x bulk201, Sediment Filter
8 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x Optional: 564 Membrane Filter Housing Wrench Opener
4 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x CBV-38, Tank Ball Valve to 3/8 tubing
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
3 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
5 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x Special Filter Kit Koolermax dealer distribution kit
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x *Discontinued* RO155C
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)

View Cart$3,349.44
Specials Log InCreate Account Checkout  Shopping Cart96 item(s)
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
2 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x bulk201, Sediment Filter
8 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x Optional: 564 Membrane Filter Housing Wrench Opener
4 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x CBV-38, Tank Ball Valve to 3/8 tubing
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
3 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
5 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x TMR-25A, 2.5 AMP Transformer Power Supply Ballast for 8800 5853
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x Special Filter Kit Koolermax dealer distribution kit
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x *Discontinued* RO155C
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)

View Cart$3,349.44

AHUC, Inline Ball Hand Valve Union Connector OD Tubing [AHUC]

$5.00

AHUC, Inline Ball Hand Valve Union Connector OD Tubing



* AHUC, Inline Ball Valve or Hand Valve Union Connector

* Position "Close" to force the water to flow to long reach faucet directly

* Position "Open" to allow the water flow in/out the water tank

* Please choose size from the selection box below. Both numbers are tubing OD Outside Diameter (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" Tube OD AHUC0404
* 3/8" Tube OD x 3/8" Tube OD AHUC0606
* 1/2" Tube OD x 1/2" Tube OD AHUC0707


* 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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