Log In Log In  |  Checkout   |  30 item(s)
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
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 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT

View Cart$982.63
Specials Log InCreate Account Checkout  Shopping Cart30 item(s)
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
1 x CP-OR55, O-RING FOR MEMBRANE FILTER HOUSING WaterGeneral Systems
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
1 x AQUATEC CDP 8852-2J03-B424 Booster Pump 220V Euro Transformer
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
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 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x CDP8800, AQUATEC CDP8852-2J03-B424 Booster Pump Only Fitting
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
2 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x N-14-1M, Nipple Fitting connector between standard RO housing
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x TMR-220V-2A Aquatec TACS234-48 Transformer Power Supply EuroPlug
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT

View Cart$982.63

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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