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2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
2 x KT-103, Optional Manual Membrane Flush Valve
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x bulk818, DI resin refill bags Di-Ionization media
2 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x bulk213, Inline Carbon Filter
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 741-14, Diverter Valve for Countertop Water Units
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 205, 3rd stage solid carbon block filter (replace every 12 month

View Cart$3,858.90
Specials Log InCreate Account Checkout  Shopping Cart75 item(s)
2 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
2 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x NM-5104, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
2 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR150P
2 x KT-103, Optional Manual Membrane Flush Valve
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x 290, CB2010BB Big Blue 20" Carbon Block Filter WH20 WH250 WH2201
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
3 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x bulk818, DI resin refill bags Di-Ionization media
2 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
2 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x FK-BB10K3, Big Blue Filter Pack Bundle for WH-1030 Whole House
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Optional: 564 Membrane Filter Housing Wrench Opener
2 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x .AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
3 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x IM60, Ice Maker or RV Water Filter, Inline Typle
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
2 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x Bundle Filter Annual set KPAK-104 Sediment Carbo Block DI Resin
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x bulk213, Inline Carbon Filter
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x DI210, Heavy-duty DI system for Aquarium and Reef
1 x 6th Stage pn215 Refillable inline DI filter (color change)
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RD102
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
1 x MKP, Maintenance kit for K5150P K6150P AR150P
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
1 x NM-5103, HONEYWELL COUNTERTOP WATER FILTER *DISCONTINUED* SW1
1 x 350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 741-14, Diverter Valve for Countertop Water Units
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
2 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x 205, 3rd stage solid carbon block filter (replace every 12 month

View Cart$3,858.90

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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