Log In Log In  |  Checkout   |  146 item(s)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x EMT-10, Empty Filter Cartridge Casing Housing
2 x KT-103, Optional Manual Membrane Flush Valve
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 706, Membrane Filter Casing Housing Assembly
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 741-14, Diverter Valve for Countertop Water Units
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 719, Drain Saddle Clamp / Valve
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 720, Feed Water Adapter with Needle Valve
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 723, Feed Water Adapter with Ball Valve
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x HK120-P-TK-220V for EURO 220V / 50Hz
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x bulk213, Inline Carbon Filter
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x bulk205, Carbon Block Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5

View Cart$5,528.36
Specials Log InCreate Account Checkout  Shopping Cart146 item(s)
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 214, Clear Inline Filter Cartridge Empty Case
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x EMT-10, Empty Filter Cartridge Casing Housing
2 x KT-103, Optional Manual Membrane Flush Valve
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
2 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 706, Membrane Filter Casing Housing Assembly
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x Bundle Filter Annual set KPAK-104b Sediment Carbon Resin Refill
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
2 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x 741-14, Diverter Valve for Countertop Water Units
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 719, Drain Saddle Clamp / Valve
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 720, Feed Water Adapter with Needle Valve
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 723, Feed Water Adapter with Ball Valve
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x .SW-1 COUNTERTOP WATER FILTER SYSTEM (WHITE HOUSING)
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x NM-5001C, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO260
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x HK120-P-TK-220V for EURO 220V / 50Hz
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x bulk213, Inline Carbon Filter
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x WH1134 Whole House Restaurant Filter System Sediment Carbon Big
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x bulk205, Carbon Block Filter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5

View Cart$5,528.36

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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