Log In Log In  |  Checkout   |  103 item(s)
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
2 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
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 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x UU Clips Pair from Bracket to Membrane Filter
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
4 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x PE Tubing Tube Cutter
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x KT-103, Optional Manual Membrane Flush Valve
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 578, TDS Water Quality Meter tds-3
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
2 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 706, Membrane Filter Casing Housing Assembly
3 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x MKP, Maintenance kit for K5150P K6150P AR150P

View Cart$3,509.99
Specials Log InCreate Account Checkout  Shopping Cart103 item(s)
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
2 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
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 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x UU Clips Pair from Bracket to Membrane Filter
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
4 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x PE Tubing Tube Cutter
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
3 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x KT-103, Optional Manual Membrane Flush Valve
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 578, TDS Water Quality Meter tds-3
1 x 3.CB2010, 3rd stage carbon block filter 20" inch for RD322 RO260
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
2 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 706, Membrane Filter Casing Housing Assembly
3 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x MKP, Maintenance kit for K5150P K6150P AR150P

View Cart$3,509.99

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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