Log In Log In  |  Checkout   |  110 item(s)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x *Discontinued* RO6ALK
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x *Discontinued* RO585A
1 x *Discontinued* RD106
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x FRQ420, Flow Restrictor 420ML / min
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Special Filter Kit Koolermax dealer distribution kit
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x 752, DC Booster Pump w/ Transformer
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150

View Cart$5,459.90
Specials Log InCreate Account Checkout  Shopping Cart110 item(s)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x *Discontinued* RO6ALK
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x *Discontinued* RO585A
1 x *Discontinued* RD106
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x FRQ420, Flow Restrictor 420ML / min
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x FM-8100T, DigiFlow Digital Water Flow Rate Meter 56" cable
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Special Filter Kit Koolermax dealer distribution kit
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x 752, DC Booster Pump w/ Transformer
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150

View Cart$5,459.90

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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