Log In Log In  |  Checkout   |  93 item(s)
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x MK420, Maintenance kit for RO565
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x KT-103, Optional Manual Membrane Flush Valve
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 719, Drain Saddle Clamp / Valve
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
4 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x 565, Digital Pressure Gauge Tester Monitor
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 578, TDS Water Quality Meter tds-3
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 706, Membrane Filter Casing Housing Assembly
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)

View Cart$2,237.68
Specials Log InCreate Account Checkout  Shopping Cart93 item(s)
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
2 x CBV-38, Tank Ball Valve to 3/8 tubing
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x MK420, Maintenance kit for RO565
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
2 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x Panel 1/4 Digital Flow Meter count up total Gallons GPM 56"cable
2 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x KT-103, Optional Manual Membrane Flush Valve
1 x SW SHELL, Countertop SW1 Empty System Only No Filter
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x 719, Drain Saddle Clamp / Valve
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x 1044-K Male Connector 1/4 OD x 1/4 NPT Compression Fitting
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
4 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x NM-5102, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 709, Automatic Shut Off Valve 4-way Four Way Valve
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x WH-20, Whole House Water Treatment Carbon Block Filter System Bi
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
2 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 5th Stage pn215 Refillable inline DI filter (color change)
1 x FM214G 1/4" NPT Digital Flow Meter count up total Water Gallons
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
3 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x AQF-600-102, Flow Meter Panel Mount 3/8" MPT
1 x 565, Digital Pressure Gauge Tester Monitor
1 x Bundle Filter KPAK-104m Sediment Carbon Block DI Resin Membrane
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x 578, TDS Water Quality Meter tds-3
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x 706, Membrane Filter Casing Housing Assembly
1 x 205, 3rd stage solid carbon block filter (replace every 12 month
1 x Liter Digiflow 1/4NPT Digital Flow Meter count up total Water
1 x WH-10, Whole House Water Treatment Carbon Filter System 10" Big
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)

View Cart$2,237.68

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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