Log In Log In  |  Checkout   |  93 item(s)
2 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 719, Drain Saddle Clamp / Valve
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 741-38, Diverter Valve for RO DI Water Systems
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 205, 2nd stage carbon block filter (replace every 12 months)
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
4 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 752, DC Booster Pump w/ Transformer
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
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 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1

View Cart$2,438.44
Specials Log InCreate Account Checkout  Shopping Cart93 item(s)
2 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 719, Drain Saddle Clamp / Valve
1 x SV-24DC-38-Brass KSD Solenoid Valve 3/8" brass 24V DC ESO
1 x 741-38, Diverter Valve for RO DI Water Systems
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 205, 2nd stage carbon block filter (replace every 12 months)
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
2 x 201, 1st stage sediment filter (replace every 6-12 months)
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
2 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
4 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
2 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x 752, DC Booster Pump w/ Transformer
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x 5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
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 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
2 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1

View Cart$2,438.44

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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