Log In Log In  |  Checkout   |  46 item(s)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x *Discontinued* RD150
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 752, DC Booster Pump w/ Transformer
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 719, Drain Saddle Clamp / Valve
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x *Discontinued* RD106
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x PE Tubing Tube Cutter
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x UU Clips Pair from Bracket to Membrane Filter
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x CBV-38, Tank Ball Valve to 3/8 tubing

View Cart$2,736.49
Specials Log InCreate Account Checkout  Shopping Cart46 item(s)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x *Discontinued* RD150
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 752, DC Booster Pump w/ Transformer
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 671C, Replacement UV Lamp Light for 609C (16 Watt)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x 719, Drain Saddle Clamp / Valve
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x *Discontinued* RD106
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x PE Tubing Tube Cutter
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x UU Clips Pair from Bracket to Membrane Filter
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x CBV-38, Tank Ball Valve to 3/8 tubing

View Cart$2,736.49

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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