Log In Log In  |  Checkout   |  129 item(s)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
5 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
4 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
4 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x bulkc10, Koolermax Carbon Block Filter
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
3 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
4 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x bulk818, DI resin refill bags Di-Ionization media
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
3 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x *Discontinued* RO585
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x *Discontinued* RO585A
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x MKP, Maintenance kit for K5150P K6150P AR150P
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x *Discontinued* RO585NTF
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 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 RD150
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x bulk213, Inline Carbon Filter
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
2 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x *Discontinued* RO6ALK
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x *Discontinued* RD106
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x bulk201, Sediment Filter
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322

View Cart$9,444.98
Specials Log InCreate Account Checkout  Shopping Cart129 item(s)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5150P
5 x Parts, Ro Water System Installation Parts Bag 1/4"
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x 324, 4th stage TFC-24 US membrane filter (replace every 2-3 yrs)
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
4 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
2 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
2 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
4 x 3rd stage C10 carbon block filter (replace every 6-12 months)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
3 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
2 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
2 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x bulkc10, Koolermax Carbon Block Filter
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
3 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
4 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x bulk818, DI resin refill bags Di-Ionization media
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
3 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
2 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
2 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
3 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x *Discontinued* RO585
1 x Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
3 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x *Discontinued* RO585A
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
3 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x MKP, Maintenance kit for K5150P K6150P AR150P
2 x Value Pack- Entire 3 Years of Replacement Filters Bundle K5
1 x KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x *Discontinued* RO585NTF
1 x 4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO6ALK
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 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 RD150
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x bulk213, Inline Carbon Filter
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
2 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x .K5150P, KoolerMax 150GPD 5 Stage RO System w/Booster Pump
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x *Discontinued* RO6ALK
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x 204, 2nd stage GAC filter (replace every 6-12 months)
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x *Discontinued* RD106
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x bulk201, Sediment Filter
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322

View Cart$9,444.98

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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