Log In Log In  |  Checkout   |  64 item(s)
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
2 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
3 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
2 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)

View Cart$1,913.69
Specials Log InCreate Account Checkout  Shopping Cart64 item(s)
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 316, 2nd stage CTA 16 US Membrane filter
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
2 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
2 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
3 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
2 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)

View Cart$1,913.69

ARD, Reducer Fitting Straight Tube OD Stem OD [ARD]

$3.50

ARD, Reducer Fitting Straight Tube OD Stem OD



* ARD, Reducer Fitting Straight Tube OD Stem OD

* Please choose size from the selection box below. First number is tubing OD and second number is Stem 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 3/8" Stem OD ARD0406
* 3/8" Tube OD x 1/2" Stem OD ARD0607


* 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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