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Immersion heaters

Caldor immersion heaters are engineered for efficient and reliable heating of liquids in industrial tanks and vessels, delivering consistent performance, long service life, and application-specific customization.

Industrial Immersion Heaters for Efficient and Reliable Liquid Heating

Immersion heaters are electric heating elements specifically engineered to heat water and other liquids directly inside tanks, vessels, or process containers. Once immersed, the element converts electrical energy into heat and transfers it efficiently to the surrounding fluid, ensuring fast, uniform, and reliable temperature control.

Caldor immersion heaters are designed with robustness and real-world industrial use in mind. Depending on the application, they are supplied with threaded fittings or flanged connections, allowing secure mounting and precise positioning inside the tank. Each unit is equipped with a sealed, moisture-resistant terminal box that protects electrical connections in demanding and exposed environments.

Built for continuous operation and long service life, Caldor immersion heaters deliver dependable performance across water treatment, chemical processing, food industry, and many other industrial applications.

Screw Plug Immersion Heaters

Quick and secure installation directly into threaded tank nozzles; ideal for compact and medium-power applications.

Flanged Mounting

Robust solution for high-power heaters, ensuring stable positioning and easy maintenance on industrial tanks and vessels.

Immersion with Fixing Bracket

Flexible mounting for open tanks where standard threaded or flanged connections are not required.

Custom Mounting Design

Engineered solutions according to tank geometry, process conditions, and customer specifications.


Screw Plug Immersion  Heaters

Flanged immersion heaters


FLANGED
What is an immersion heater?
Immersion heaters are electric heating elements designed to heat water or other liquids directly inside tanks, containers, or basins by transferring heat to the surrounding fluid once submerged.
How are immersion heaters installed?
Immersion heaters are mounted using threaded plugs or flanged connections, ensuring secure installation and correct positioning of the heating element inside the tank.
How are electrical connections protected?
All immersion heaters are supplied with a moisture-resistant terminal box, designed to protect electrical connections in humid or exposed industrial environments.
Are immersion heaters custom-made?
Yes. Immersion heaters are custom-engineered according to the required power, operating temperature, fluid type, and tank configuration.
Can temperature control be integrated?
Depending on application requirements, immersion heaters can be supplied with a built-in thermostat or a thermocouple for accurate temperature monitoring and control.
What is a protective well (pipe insert)?
A protective well (pipe insert) is used when the heating element cannot be directly immersed in the liquid. It allows heat transfer to the process fluid while isolating the heater from direct contact.
Are circulation heaters available?
Yes. Circulation heaters can be designed upon request for in-line heating applications where the fluid flows continuously through the system.
Which sheath materials are available?
Sheath material is selected based on the heated medium and operating conditions. Available options include:
  • Incoloy
  • Copper
  • Stainless steel
  • Inconel
  • Teflon
  • Quartz
  • Other materials on request
Where are immersion heaters commonly used?
Immersion heaters are widely used in industrial processes requiring reliable and controlled heating of liquids to ensure stable production conditions.
Liquid, gas, and compressed air heating
Suitable designs can be applied for heating liquids and, in dedicated configurations, gases or compressed air in industrial production processes.
Water and aqueous solution heating
Commonly used in chemical, food, and pharmaceutical industries for heating water or aqueous solutions in reactors, vessels, and industrial tanks.
Oil and corrosive liquid heating
Designed for demanding applications involving oils, special baths, and corrosive liquids by selecting appropriate sheath materials and construction details.