Log In Log In  |  Checkout   |  30 item(s)
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 578, TDS Water Quality Meter tds-3
2 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x *Discontinued* RO585A
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter

View Cart$1,796.50
Specials Log InCreate Account Checkout  Shopping Cart30 item(s)
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x UC SHELL, Honeywell UC7000 Empty System Only No Filter
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x Panel 3/4" 6710M-66TM Digital Flow Meter count up GPM 115V
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x 578, TDS Water Quality Meter tds-3
2 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x *Discontinued* RO585A
1 x B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter

View Cart$1,796.50

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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