Flange Mount Immersion Heaters

Flange Mount Immersion Heaters are designed for use in tanks and pressurized vessels to heat both liquids and gases. They mate to a companion flange that is either welded to a tank wall or, for circulating type heaters, to a pipe.

Applications include fluid heat transfer media, tar, high to low viscosity petroleum oils, asphalt, wax, molten salt, and other solutions not corrosive to a steel sheath.
Steel Sheath Heaters 8 watts/in², used for: Fuel Oils (Bunker C and Number 6)
Steel Sheath Heaters 15 watts/in², used for: Fuel Oils (Number 4 and 5)
Steel Sheath Heaters 23 watts/in², used for: Lightweight Oils, Heat Transfer Oils, Degreasing Solutions

A Nickel (30-35%), Chromium (19-23%), Iron alloy. The high nickel content of this alloy contributes to its resistance to scaling and corrosion. Used in air heating and immersion heating of potable water and other liquids that are not corrosive to an Incoloy^® 800 sheath
Incoloy^® Sheath Heaters 16 watts/in², used for: Heat Transfer Oils, Liquid Paraffin
Incoloy^® Sheath Heaters 23 watts/in², used for: Forced Air, Caustic Solutions, Degreasing Solutions
Incoloy^® Sheath Heaters 48 watts/in², used for: Process Water

Mainly used in clean water heating for washrooms, showers, rinse tanks and freeze protection of storage tanks.
Copper Sheath Heaters 60 watts/in², used for: Clean Water

A Chromium (16-18%), Nickel (11-14%), Iron Alloy with Molybdenum (2-3%) added to improve corrosion resistance in certain environments, especially those that would tend to cause pitting due to the presence of chlorides. Applications include deionized water.
316 Stainless Steel Sheath Heaters 60 watts/in², used for: Deionized Water

304 Stainless Steel- A Chromium (18-20%), Nickel (8-11%), Iron Alloy used in the food industry, sterilizing solutions, air heating and many organic and inorganic chemicals.

321 Stainless Steel- A Chromium (17-20%), Nickel (9-13%), Iron Alloy modified with the addition of titanium to prevent carbide precipitation and the resulting intergranular corrosion that can take place in certain mediums when operating in the 800-1200°F (427-649°C) temperature range.

Flanged Immersion Heater surfaces in contact with the material being heated can be passivated or electro-polished to improve their resistance to corrosion.

Passivation removes surface contamination, usually iron, so that the optimum corrosion resistance of the stainless steel is maintained. Surface contamination would come from the small amount of steel that may be worn off a tool during the manufacturing process. Passivating is accomplished by dipping the heater in a warm solution of nitric acid.

Electro-Polishing is an electrochemical process that removes surface imperfections and contaminants, enhancing the corrosion resisting ability of the stainless steels. The resultant surface is clean, smooth and bright. Many medical and food applications require this finish.