Log In Log In  |  Checkout   |  59 item(s)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 752, DC Booster Pump w/ Transformer
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 706, Membrane Filter Casing Housing Assembly
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
3 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 719, Drain Saddle Clamp / Valve
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x 741-14, Diverter Valve for Countertop Water Units
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x FRQ850, Flow Restrictor 850ML / min
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G

View Cart$1,602.84
Specials Log InCreate Account Checkout  Shopping Cart59 item(s)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 752, DC Booster Pump w/ Transformer
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 706, Membrane Filter Casing Housing Assembly
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
3 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 718b Blue Color Tubing 24 feet 1/4" LLDPE PE tube drinking water
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 719, Drain Saddle Clamp / Valve
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
1 x 741-14, Diverter Valve for Countertop Water Units
1 x BBK10, Replacement Filter Big Blue Whole House WH-1134
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x FRQ850, Flow Restrictor 850ML / min
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G

View Cart$1,602.84

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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