Log In Log In  |  Checkout   |  49 item(s)
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x *Discontinued* RO155
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 752, DC Booster Pump w/ Transformer
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)

View Cart$1,696.24
Specials Log InCreate Account Checkout  Shopping Cart49 item(s)
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x *Discontinued* RO155
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 752, DC Booster Pump w/ Transformer
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x KT-103, Optional Manual Membrane Flush Valve
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)

View Cart$1,696.24

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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