Log In Log In  |  Checkout   |  78 item(s)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 578, TDS Water Quality Meter tds-3
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x CDP6800T110V, AQUATEC Booster Pump Transformer 6840-2J03-B224
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)

View Cart$3,734.83
Specials Log InCreate Account Checkout  Shopping Cart78 item(s)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x FRQ550, Flow Restrictor 500 to 600ML / min
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
3 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 578, TDS Water Quality Meter tds-3
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x TMR-220V-1A Aquatec TACS234-19 Transformer Power Supply EuroPlug
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x .K5 KoolerMax 75GPD 5 STAGE REVERSE OSMOSIS RO FILTER SYSTEM
1 x FM-6710M-88 1" Digital Flow Meter count up Total GPM 56" cable
1 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x CDP6800T110V, AQUATEC Booster Pump Transformer 6840-2J03-B224
2 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
2 x 5th or 6th Stage IC21 inline carbon filter (every 6 to 12 mons)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x SET8855-300 Aquatec 5853 Booster Pump Assembly for 300GPD RO Sys
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x FM-8000T, DigiFlow Digital Water Flow Meter Rate Count Down
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x 202,1 MICRON Sediment filter (replace every 6-12 month) SED1001
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)

View Cart$3,734.83

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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