Log In Log In  |  Checkout   |  108 item(s)
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x *Discontinued* RO585A
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
2 x 752, DC Booster Pump w/ Transformer
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
2 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x KT-103, Optional Manual Membrane Flush Valve
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x 578, TDS Water Quality Meter tds-3
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x FRQ550, Flow Restrictor 500 to 600ML / min
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
2 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x MK420, Maintenance kit for RO565
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x FRQ200, Flow Restrictor 200ML / min
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x FRQ850, Flow Restrictor 850ML / min
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250

View Cart$3,507.79
Specials Log InCreate Account Checkout  Shopping Cart108 item(s)
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x *Discontinued* RO585A
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
2 x 752, DC Booster Pump w/ Transformer
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
2 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x KT-103, Optional Manual Membrane Flush Valve
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x 578, TDS Water Quality Meter tds-3
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x FRQ550, Flow Restrictor 500 to 600ML / min
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x 3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
2 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x MK420, Maintenance kit for RO565
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x FRQ200, Flow Restrictor 200ML / min
3 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
3 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x FRQ850, Flow Restrictor 850ML / min
1 x .AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x 1/2" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250

View Cart$3,507.79

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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