Log In Log In  |  Checkout   |  85 item(s)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 706, Membrane Filter Casing Housing Assembly
3 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x FRQ200, Flow Restrictor 200ML / min
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x FRQ300, Flow Restrictor 300ML / min
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x 741-14, Diverter Valve for Countertop Water Units
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet

View Cart$2,617.83
Specials Log InCreate Account Checkout  Shopping Cart85 item(s)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 706, Membrane Filter Casing Housing Assembly
3 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 316, 2nd stage CTA 16 US Membrane filter (every 2-3 yrs)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x FRQ200, Flow Restrictor 200ML / min
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x FRQ300, Flow Restrictor 300ML / min
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x 741-14, Diverter Valve for Countertop Water Units
1 x KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
3 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet

View Cart$2,617.83

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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