Log In Log In  |  Checkout   |  49 item(s)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
2 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 578, TDS Water Quality Meter tds-3
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x 752, DC Booster Pump w/ Transformer
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x FRQ420, Flow Restrictor 420ML / min
1 x *Discontinued* RO585NTF
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x FRQ850, Flow Restrictor 850ML / min
1 x bulk201, Sediment Filter
1 x 741-14, Diverter Valve for Countertop Water Units
1 x bulk205, Carbon Block Filter
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 205, 5th stage final carbon filter
1 x bulkc10, Koolermax Carbon Block Filter
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265

View Cart$2,955.95
Specials Log InCreate Account Checkout  Shopping Cart49 item(s)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
2 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 578, TDS Water Quality Meter tds-3
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x 752, DC Booster Pump w/ Transformer
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x FRQ420, Flow Restrictor 420ML / min
1 x *Discontinued* RO585NTF
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x FRQ850, Flow Restrictor 850ML / min
1 x bulk201, Sediment Filter
1 x 741-14, Diverter Valve for Countertop Water Units
1 x bulk205, Carbon Block Filter
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 205, 5th stage final carbon filter
1 x bulkc10, Koolermax Carbon Block Filter
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265

View Cart$2,955.95

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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