Log In Log In  |  Checkout   |  61 item(s)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
2 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x bulksf05, Koolermax Sediment Filter
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x WS-150M, Whole House Water Softener
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 565, Digital Pressure Gauge Tester Monitor
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x CDP6800T110V, AQUATEC Booster Pump Transformer 6840-2J03-B224
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
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 *Discontinued* RD106
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134

View Cart$6,082.34
Specials Log InCreate Account Checkout  Shopping Cart61 item(s)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
2 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
1 x 773, AC Booster Pump Assembly Large 150-200GPD RO systems SET
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x bulksf05, Koolermax Sediment Filter
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x WS-150M, Whole House Water Softener
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 565, Digital Pressure Gauge Tester Monitor
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x CDP6800T110V, AQUATEC Booster Pump Transformer 6840-2J03-B224
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x CDP6800, AQUATEC CDP6800 Booster Pump Only 6840-2J03-B224
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
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 *Discontinued* RD106
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134

View Cart$6,082.34

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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