Log In Log In  |  Checkout   |  27 item(s)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System

View Cart$408.04
Specials Log InCreate Account Checkout  Shopping Cart27 item(s)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x Bundle Filter KPAK-104bm Sediment Carbon DI Resin Membrane
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x 4064K Male Connector Elbow 3/8 OD Compression Fitting 1/4 NPT
1 x CKV0402, Blue color Elbow Check Valve Elbow Type
1 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x SC207, Specialty Filter Refillable Color Changing DI Filter for
1 x 581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x 2nd stage C10 carbon block filter (replace every 6-12 months)
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 4th stage Optional Refill bag #818 DI Resin Refill Bag
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x 3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System

View Cart$408.04

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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