Log In Log In  |  Checkout   |  51 item(s)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x DB40, DI Resin Refill Bag for DI210, RD322
2 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 723, Feed Water Adapter with Ball Valve
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
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 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC

View Cart$1,938.95
Specials Log InCreate Account Checkout  Shopping Cart51 item(s)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x DB40, DI Resin Refill Bag for DI210, RD322
2 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 723, Feed Water Adapter with Ball Valve
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
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 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC

View Cart$1,938.95

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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