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Immersion Electric Heating Resistors for Water

Electric resistors for water are the most common execution in process heating: industrial washing tanks, boilers, storage tanks, humidification systems. The sheath — typically AISI 316L for the best resistance to corrosion and limescale — is sized on power and specific power density (W/cm²) to limit scale build-up on the heating surface and extend service life.

  • Immersion, flanged or threaded execution with AISI 304/316L sheath
  • Power density calibrated to water quality (hardness, dissolved salts) to reduce limescale build-up
  • IP protection and safety thermostat/dry-run cut-off
  • Typical use: industrial washing tanks, boilers and storage tanks, humidification and water-treatment plants
  • Standard sealed execution; ATEX certification available on request for classified-area installations

The technical drawing below shows an example configuration: use the guided configurator to tell us the power, length, dimensions and operating temperature of your water application.

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Illustrative example

Intended use: Water

The values shown in the drawing are an indicative reference to help you read the technical diagram: they do not correspond to a real model, price or product specification.

TECHNICAL DIAGRAM — WATER ILLUSTRATIVE EXAMPLE — indicative values, not a real product specification NON-ATEX POWER 6 kW LENGTH 1000 mm DIMENSIONS Ø 48 mm, flangia DN50 OPERATING TEMP. 180 °C Generic technical drawing, not to scale — actual dimensions will be confirmed in the quote.

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Frequently asked questions

They are the most common execution in process heating: industrial washing tanks, boilers, storage tanks, and humidification and water-treatment systems.
The specific power density (W/cm²) is calibrated to water quality (hardness, dissolved salts): a lower density reduces the sheath surface temperature and therefore limescale build-up, extending the heater's service life.
Standard sealed execution is the default; ATEX certification is available on request only for installations in a classified potentially explosive atmosphere. The sheath is typically AISI 304/316L, with IP protection and a safety thermostat/dry-run cut-off.