Immersion Heaters - Over-the-Side Immersion Heaters

By: Bucan  09-12-2011
Keywords: Heaters, Industrial Applications, Water Tanks

Over-the-side immersion heaters are for applications where installing a heater through the side wall of a vessel is not convenient. These immersion heaters are easy to install and can be moved from one tank to another without the need to drain the tank.

Over-the-side immersion heaters are ideal for applications where scale or sludge build-up on the heater sheath is an issue. These heaters can be easily removed for periodic cleaning.

Bucan over-the-side immersion heaters are available in three models:

  • straight "L" shaped for heating the bottom of rectangular tanks
  • circular “O” shaped for heating the bottom of round tanks
  • Rectangular shaped that are hung on the side lip of the tank to provide side wall heating.




  • Weather/moisture proof terminal box (NEMA 4).
  • Single phase or three phase formations
  • The possibility of adding heater banks for higher kilowatt output
  • Different sheath materials that can meet design parameters and conditions of the liquid being heated.
  • Not heated vertical riser pipes for bottom of tank heaters.
  • Stand-off legs that support bottom of tank heaters and prevent them from touching the tank floor.


  • Vertical riser can be made in any height
  • Hazardous Location (NEMA 7) terminal enclosures
  • Passivation - when required
  • Special fitting for closed top
  • Built-in thermostats, thermocouples, and high limit thermocouples

Also see our selection of:

Keywords: Heaters, Immersion Heaters, Industrial Applications, Terminal Box, Terminal Enclosures, Water Tanks,

Contact Bucan

Email - none provided

Print this page

Other products and services from Bucan


Immersion Heaters - Pipe Insert Immersion Heaters

Pipe Insert immersion heaters are ideal for applications where direct contact of the liquid and the heating element are to be avoided; or in large storage tanks where draining the tank, in the event a heater needs replacing, is difficult. When more than one heater is needed, mount the pipes in parallel rows to avoid liquid overheating in the centre from a wagon wheel installation.


Tubular Heaters - Finned Tubular Heaters

In applications where tubular heaters are exposed to forced convection, placing fins around tubularheaters increases their surface area and thus improves their heat transferring capacity. Finned tubularheaters, compared to regular tubular heaters, run at lower surface temperatures for the same watt densities when placed in identical air streams.


Duct Heaters - High Temperature Duct Heaters

Both these models have general purpose terminal enclosures (NEMA 1) and utilize rugged 0.430in diameter Incoloy tubular heaters that are arranged in an optimum configuration to minimize the pressure drop. Industrial duct heaters are heavy duty, dependable and safe heating units designed for low pressure fan-forced heating systems. Units designed for low outlet temperatures and units designed for high outlet temperatures.


Immersion Heaters - Screw Plug Immersion Heaters

Bucan screw plug electrical immersion heaters are designed to be immersed directly into the gas or liquid being heated; since these heaters come into direct contact with the gas or liquid, heat up times are very fast. Industrial immersion heaters are medium capacity heating units designed to heat liquids, viscous fluids, forced air and gases inside tanks, vessels and pipes. The sheath material of the heating elements could be.


Tubular Heaters - Straight & Formed Tubular Heaters

These versatile heating elements are available in steel, copper, stainless steel or Incoloy outside sheath and can be utilized in application temperatures of up to 1400º F. Tubular heaters can be used in free air, clamped to a surface, placed inside a groove or cast into metal. Tubul ar heater s are highly adaptable to most applications where electrical heating is required. They can be used in their straight form or bent into various shapes.


Immersion Heaters - Flanged Immersion Heaters

Various types of electrical protection housing, built in thermostats, thermocouples and high limit switches can be incorporated. Flanged immersion heaters are high capacity electrical heating units made for tanks or pressurized vessels. They consist of multiple tubular heaters formed into hairpin and welded or brazed to flanges. The heating elements could be made of copper, steel, stainless steel or Incoloy sheath.