Log In Log In  |  Checkout   |  97 item(s)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x *Discontinued* RO155C
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
3 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
2 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
2 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 205, 2nd stage carbon block filter (replace every 12 months)
3 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x WS-150M, Whole House Water Softener
1 x SC209, Specialty Filter Nitrate Removal Filter
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 706, Membrane Filter Casing Housing Assembly
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
2 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
2 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch

View Cart$8,685.79
Specials Log InCreate Account Checkout  Shopping Cart97 item(s)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x *Discontinued* RO155C
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
3 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 755, Aquatec Demand Delivery Pump 5851-7E12-J574 Increase Output
2 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
2 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x 205, 2nd stage carbon block filter (replace every 12 months)
3 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x WH-5, Whole House Water Treatment Sediment Filter System 10" Big
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x 913, 5th stage inline carbon filter (every 12 months)
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x HK120-PUMP KoolerMax Aeroponics Hydroponics System Booster Pump
1 x WS-150M, Whole House Water Softener
1 x SC209, Specialty Filter Nitrate Removal Filter
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x WSACF-150T, Whole House Water Treatment ACF-150T
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 4th Stage Color Changing DI Filter SC207 for AR-104H
2 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 706, Membrane Filter Casing Housing Assembly
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
2 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
1 x 335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
2 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch

View Cart$8,685.79

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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