Over-the-Side Immersion Heaters
Over-the-side immersion heaters are installed by lowering the heating bundle over the rim of a tank, with the terminal head remaining above the liquid. This arrangement can be useful when a tank has no suitable threaded boss or flange, when the vessel must be drained frequently, or when the heater needs to be removed for cleaning. The heated section is immersed in the process liquid while the bend and terminal assembly are positioned to support the tank geometry. Material compatibility is particularly important because the heater sheath is in direct contact with the liquid; the design must also account for liquid level, tank dimensions, and any agitation or circulation. Suitable low-level protection is important to prevent energising the heater when the active section is not adequately immersed. Over-the-side heaters can be tailored for cleaning baths, plating tanks, water, and other compatible process liquids.
Over-the-side heater hanging into a process tank, heating the solution without any tank opening.
How it works
The immersed section produces resistance heat and transfers it directly to the liquid. Circulation distributes the energy through the tank; safe operation depends on maintaining the required immersion depth and controlling liquid temperature.
Information to provide when ordering
- Tank depth and width
- Liquid chemistry
- Required temperature
- Voltage and kW
- Immersion length
- Sheath material
- Mounting/rim arrangement
- Terminal position
- Low-level protection requirements
Where it is used
What it heats
Need over-the-side immersion heaters for your application?
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