Log In Log In  |  Checkout   |  62 item(s)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x HK120-P-TK for USA 110V / 60Hz
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 752, DC Booster Pump w/ Transformer
1 x KT-103, Optional Manual Membrane Flush Valve
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x *Discontinued* RO155C
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x *Discontinued* RO585NTF
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x CKV0402, Blue color Elbow Check Valve Elbow Type

View Cart$2,552.95
Specials Log InCreate Account Checkout  Shopping Cart62 item(s)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x HK120-P-TK for USA 110V / 60Hz
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 752, DC Booster Pump w/ Transformer
1 x KT-103, Optional Manual Membrane Flush Valve
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x *Discontinued* RO155C
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x *Discontinued* RO585NTF
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x CKV0402, Blue color Elbow Check Valve Elbow Type

View Cart$2,552.95

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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