Log In Log In  |  Checkout   |  65 item(s)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
2 x 752, DC Booster Pump w/ Transformer
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 205, 5th stage final carbon filter
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G

View Cart$2,180.45
Specials Log InCreate Account Checkout  Shopping Cart65 item(s)
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
2 x 752, DC Booster Pump w/ Transformer
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x ERP500 Aquatec Permeate Pump Reverse Osmosis RO System USA made
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 205, 5th stage final carbon filter
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G

View Cart$2,180.45

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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