Log In Log In  |  Checkout   |  135 item(s)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 720, Feed Water Adapter with Needle Valve
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
4 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 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Special Filter Kit Koolermax dealer distribution kit
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x 752, DC Booster Pump w/ Transformer
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x bulkc10, Koolermax Carbon Block Filter
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x DB40, DI Resin Refill Bag for DI210, RD322
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x KT-103, Optional Manual Membrane Flush Valve
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x CDP6800T110V, AQUATEC Booster Pump Transformer 6840-2J03-B224
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x bulk201, Sediment Filter
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 719, Drain Saddle Clamp / Valve
1 x 741-14, Diverter Valve for Countertop Water Units
1 x TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
1 x 578, TDS Water Quality Meter tds-3
1 x TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
1 x TMR-AQT-2A, Transformer Power Supply Aquatec TACS114-48 for 8800
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output

View Cart$10,253.68
Specials Log InCreate Account Checkout  Shopping Cart135 item(s)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x 720, Feed Water Adapter with Needle Valve
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
4 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 205, 3rd stage solid carbon block filter (replace every 12month)
1 x Special Filter Kit Koolermax dealer distribution kit
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
2 x 752, DC Booster Pump w/ Transformer
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x SET8855 Aquatec 5853 Booster Pump Assembly for Aeroponics System
1 x bulkc10, Koolermax Carbon Block Filter
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x AQUATEC 8852-2J03-B424 High Flow Booster Pump 110V Transformer
1 x DB40, DI Resin Refill Bag for DI210, RD322
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x KT-103, Optional Manual Membrane Flush Valve
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x CDP6800T110V, AQUATEC Booster Pump Transformer 6840-2J03-B224
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
1 x SC209, Specialty Filter Nitrate Removal Filter
1 x TMR-DC-2412, Transformer Power Supply for #752 Booster Pump
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x bulk201, Sediment Filter
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x TMR-DC-1212, Transformer Power Supply for Delivery Demand Pump
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x HK120-P-220V KoolerMax Aeroponics Hydroponics RO + Booster Pump
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x 719, Drain Saddle Clamp / Valve
1 x 741-14, Diverter Valve for Countertop Water Units
1 x TMR-AQT-68, Transformer Power Supply Aquatec TACS114-19EP for 68
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x 756SET, Aquatec Permeate Pump Reverse Osmosis System ERP1000
1 x 578, TDS Water Quality Meter tds-3
1 x TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x DDP5800, Aquatec Demand Delivery Pump 5851-7E12 Increase Output
1 x TMR-AQT-2A, Transformer Power Supply Aquatec TACS114-48 for 8800
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output

View Cart$10,253.68

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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