Log In Log In  |  Checkout   |  32 item(s)
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x *Discontinued* RO585NTF
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Special Filter Kit Koolermax dealer distribution kit
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*

View Cart$1,720.95
Specials Log InCreate Account Checkout  Shopping Cart32 item(s)
1 x SC725, Specialty Filter Chloramines / Hydrogen Sulfide Removal
2 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x SC435, Specialty Filter Arsenic / Fluoride Removal Filter
1 x .AR150PNTF, KoolerMax AR150P RO System Shell without tank faucet
1 x Optional: 564 Membrane Filter Housing Wrench Opener
1 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x 733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
2 x SW SHELL, Countertop SW1 Empty System Only No Filter
1 x *Discontinued* RO585NTF
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x 741-14, Diverter Valve for Countertop Water Units
1 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
1 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x Special Filter Kit Koolermax dealer distribution kit
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
1 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
1 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x .AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x O-RING RINGS FOR WH20 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 20"
1 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*

View Cart$1,720.95

4042-K Male Elbow Fitting Compression type(membrane housing use) [4042-K]

$2.50

4042-K Male Elbow Fitting Compression type(membrane housing use)



* 4042-K Male Elbow Compression type 1/4" OD TUBING, 1/8" MPT PIPE THREAD

* This fitting is used in Membrane filter housing only.

 



 



* 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. 

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