Log In Log In  |  Checkout   |  103 item(s)
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 578, TDS Water Quality Meter tds-3
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
3 x Optional: 564 Membrane Filter Housing Wrench Opener
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
2 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 565, Digital Pressure Gauge Tester Monitor
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 752, DC Booster Pump w/ Transformer
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x WS-150M, Whole House Water Softener
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet

View Cart$6,531.59
Specials Log InCreate Account Checkout  Shopping Cart103 item(s)
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
2 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 578, TDS Water Quality Meter tds-3
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
3 x Optional: 564 Membrane Filter Housing Wrench Opener
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x PH80, Digital pH Meter Hydrotester Calibration Storage Solutions
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x 277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
2 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 565, Digital Pressure Gauge Tester Monitor
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 752, DC Booster Pump w/ Transformer
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x WS-150M, Whole House Water Softener
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x Panel 1/2" 6710M-44TM Digital Flow Meter count up Gallon 115V
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x WT-bac, Water Testing Kit, Bacteria Test
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x KF750, Elite Series: Polish Chrome Drinking Water Faucet
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x FM-8100TG44, DigiFlow Digital Water Flow Rate Meter
1 x KF511, Polished Chrome Cross-Handle with Gold Trim Faucet

View Cart$6,531.59

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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