Durex Industries has over 30 years of experience in the application and design of robust tubular immersion heaters and process assemblies. We have thousands of standard designs for quick field replacements and convenient ordering. Durex also has extensive experience with custom designed immersion heaters for tank, reservoir and circulation flow applications.
Immersion heaters are used for direct liquid immersion heating applications. They are constructed of one or more heater elements brazed or welded into various types of mounting fittings. Standard and custom engineered designs are available for tailored solutions to application requirements.
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Process Heater Application Guidelines
Screw Plug/Flange Material
Element Sheath Material
Typical Maximum Watt Density(w/in2)
|Clean/Potable Water||Brass, Steel, 304 Stainless Steel||Copper, Incoloy®, 304 Stainless Steel||60 - 90|
|Deionized/Demineralized Water||316 Stainless Steel (Passivated)||316 Stainless Steel (Passivated)||60 - 90|
|Process Water||Steel||Incoloy®||45 - 48|
|Caustic & Degreasing Solutions||Steel||Incoloy®||20 - 23|
|Forced Air & Gases||Steel, 304 Stainless Steel||Incoloy®||20 - 30|
|Light Weight Oils, Degreasing Solutions, Heat Transfer Oils||Steel||Steel||20 - 23|
|Mildly Corrosive Solutions||Steel, 304 Stainless Steel||Incoloy®||15 - 16|
|Medium Weight Oils, Heat Transfer Oils, Paraffin||Steel||Steel||15 - 16|
|Bunker C & #6 Fuel Oil||Steel||Steel||6 - 8|
Markets Served and Applications
Pharmaceuticals, Food and Beverage Industries:
Oil, Gas, Petrochem, Chemical Industries:
Primary and Secondary Metals Processing:
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