Log In Log In  |  Checkout   |  74 item(s)
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x *Discontinued* RO585A
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x *Discontinued* RO6ALK
3 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
2 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x *Discontinued* RO585NTF
1 x KT-103, Optional Manual Membrane Flush Valve
1 x Special, Single Stage Housing Bracket Shell Connection Kit
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
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 Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 719, Drain Saddle Clamp / Valve
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x bulkic21, Koolermax Inline Carbon Filter
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x *Discontinued* RO155C
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6

View Cart$3,326.13
Specials Log InCreate Account Checkout  Shopping Cart74 item(s)
1 x FM214G, FM-6710M DigiFlow Digital Water Flow Meter Gauge Moniter
1 x 741-38, Diverter Valve for RO DI Water Systems
1 x .K5NTF KoolerMax K5 RO System Shell without tank and faucet
1 x 316UP, Upgrade for CTA20 gal/day (includes US Membrane filter)
1 x *Discontinued* RO585A
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
1 x Panel 1" Digiflow 6710M-88TM Digital Flow Meter count up GPM 115
2 x 205, 3rd stage solid carbon block filter (replace every 12month)
4 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
2 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x *Discontinued* RO6ALK
3 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x MK8002, Maintenance kit for double membrane system RD322 RO260
2 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x *Discontinued* RO585NTF
1 x KT-103, Optional Manual Membrane Flush Valve
1 x Special, Single Stage Housing Bracket Shell Connection Kit
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
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 Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Micro 1/4 NPT Digital Flow Meter count up total Water Liter LPM
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
1 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
1 x 719, Drain Saddle Clamp / Valve
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 3/4" NPT Digiflow Digital Flow Meter count up total Water Gallon
1 x 310, 2nd stage CTA 10 US Membrane filter
1 x bulkic21, Koolermax Inline Carbon Filter
2 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x *Discontinued* RO155C
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x EMT-10, Empty Filter Cartridge Casing Housing
1 x KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6

View Cart$3,326.13

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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