Flanged Immersion Heaters

Flanged Immersion Heaters

Flanged immersion heaters are designed to heat liquids inside tanks, vessels, and process systems through heating elements mounted on a flange that bolts to a matching vessel nozzle or opening. The flange provides a mechanical mounting interface, while the heating bundle extends into the liquid to transfer energy directly to the process medium. The assembly can be engineered for water, oils, thermal fluids, and compatible process liquids, subject to suitable material selection and operating limits. Important design variables include the liquid's chemistry, viscosity, flow or circulation, operating pressure, temperature, element surface loading, flange standard, and maintenance access. Sheath materials and gasket selections must be compatible with the liquid and vessel conditions. Low liquid level, deposits, stagnant zones, or incorrect watt density can cause local overheating and premature failure, so suitable level controls and over-temperature protection may be required. Flanged heaters are often supplied as a customised bundle matched to the customer's vessel and process duty.