Log In Log In  |  Checkout   |  26 item(s)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 752, DC Booster Pump w/ Transformer
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 205, 3rd stage solid carbon block filter (replace every 12month)

View Cart$909.98
Specials Log InCreate Account Checkout  Shopping Cart26 item(s)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 752, DC Booster Pump w/ Transformer
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 205, 3rd stage solid carbon block filter (replace every 12month)

View Cart$909.98

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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