Log In Log In  |  Checkout   |  24 item(s)
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 720, Feed Water Adapter with Needle Valve
1 x KT-103, Optional Manual Membrane Flush Valve
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x Special, Single Stage Housing Bracket Shell Connection Kit

View Cart$1,323.48
Specials Log InCreate Account Checkout  Shopping Cart24 item(s)
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 720, Feed Water Adapter with Needle Valve
1 x KT-103, Optional Manual Membrane Flush Valve
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x KF320UP, SUBSTITUTE/Upgrade Faucet BRUSHED NICKEL STAINLESS STEE
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x .RD322 Aquarium 260-300 GPD REVERSE OSMOSIS RO+DI WATER SYSTEM
1 x Special, Single Stage Housing Bracket Shell Connection Kit

View Cart$1,323.48

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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