Log In Log In  |  Checkout   |  139 item(s)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
4 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 205, 5th stage final carbon filter
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Special Filter Kit Koolermax dealer distribution kit
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x *Discontinued* RO155
1 x *Discontinued* RO585ERP
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x *Discontinued* RO585NTF
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
4 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x 752, DC Booster Pump w/ Transformer
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x SC209, Specialty Filter Nitrate Removal Filter
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x bulk213, Inline Carbon Filter
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x bulkc10, Koolermax Carbon Block Filter
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x *Discontinued* RD106
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System

View Cart$9,793.01
Specials Log InCreate Account Checkout  Shopping Cart139 item(s)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
4 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 205, 5th stage final carbon filter
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
5 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Special Filter Kit Koolermax dealer distribution kit
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x *Discontinued* RO155
1 x *Discontinued* RO585ERP
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x *Discontinued* RO585NTF
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
4 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x .AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x 752, DC Booster Pump w/ Transformer
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x HK120-P-TK-220V for EURO 220V / 50Hz
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x .K5150PNTF, KoolerMax K5150P RO System Shell without tank faucet
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x SC209, Specialty Filter Nitrate Removal Filter
2 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x bulk213, Inline Carbon Filter
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x bulkc10, Koolermax Carbon Block Filter
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x *Discontinued* RD106
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System

View Cart$9,793.01

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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