Flanged Immersion Heater

SKU: TZ-FIH-STD

Flanged immersion heater is an industrial electric heating solution designed for direct heating of water, oil, and other compatible liquids. The heating elements are securely welded to a flange, allowing the heater to be installed directly into tanks, vessels, boilers, and industrial process equipment.

EaseWise provides multiple standard stock models as well as OEM custom flanged immersion heaters. Standard options cover different flange sizes, heating tube diameters, immersion lengths, voltage, and power ratings. Sheath materials including SUS304, SUS316L, SUS321, copper, Incoloy, and titanium are available for different liquid and operating conditions.

Standard flanged immersion heaters are available from 3 kW to 24 kW, with custom voltage, power, dimensions, materials, and thermowell configurations available according to your application requirements.

View our complete Immersion Heater product range.

Flanged Immersion Heater Features

• Direct immersion heating for efficient heat transfer
• Flanged mounting design for tanks, vessels, boilers, and process equipment
• Multiple flange sizes including threaded and round flange configurations
• Heating tube diameters from Φ6 mm to Φ20 mm
• Immersion lengths from 150 mm to 1500 mm available
• Standard power options from 3 kW to 24 kW
• SUS201, SUS304, SUS316L, SUS321, copper, and other material options
• Incoloy 800, Incoloy 840, titanium, and PTFE-coated options available for demanding applications
• 12V to 600V electrical configurations available depending on requirements
• Thermowell can be integrated for thermocouple or RTD installation
• Individual heating tubes can be replaced on selected constructions
• OEM and non-standard customization supported

Technical Parameters

Parameter	Specification
Flange Size	Threaded flange: NPT/BSP 1″, 1.25″, 1.5″, 2″, 2.5″, 3″; Round flange: DN25, DN50, DN65, DN100, DN150
Heating Tube Diameter	Φ6 / Φ8 / Φ10 / Φ12 / Φ14 / Φ16 / Φ20 mm
Immersion Length	150–1500 mm
Standard Power	3 kW / 6 kW / 9 kW / 12 kW / 15 kW / 18 kW / 24 kW
Voltage	12V / 24V / 36V / 110V / 220V / 230V / 380V / 415V; up to 600V custom
Surface Watt Density	2–8 W/cm² for general liquid heating; approximately 2.3 W/cm² for heavy oil and high-viscosity media
Sheath Material	SUS201 / SUS304 / SUS316L / SUS321 / Copper
Corrosion-Resistant Options	Incoloy 800 / Incoloy 840 / Titanium / PTFE coating
Flange Material	Brass / Copper / 304 Stainless Steel / Carbon Steel for specified applications
Cold Insulation Resistance	≥500 MΩ
Power Tolerance	+5% to -10%
Construction	Heating tubes welded to the flange with argon arc welding; fastened construction available for selected designs
Temperature Sensor	Optional thermowell for thermocouple or RTD
Certification	ISO9001 for standard production; CE and RoHS available for export models
Installation	Flange-mounted installation on tanks, vessels, boilers, and process equipment

Stock Reference Sizes

EaseWise provides multiple standard stock configurations for common industrial heating applications. Non-standard flange dimensions, heating lengths, voltages, powers, and materials can also be customized according to your requirements.

Item	Stock Range / Reference
Threaded Flange Size	1″ / 1.25″ / 1.5″ / 2″ / 2.5″ / 3″ NPT or BSP
Round Flange Size	DN25 / DN50 / DN65 / DN100 / DN150
Heating Tube Diameter	Φ6 / Φ8 / Φ10 / Φ12 / Φ14 / Φ16 / Φ20 mm
Immersion Length	150–1500 mm
Standard Power	3 kW / 6 kW / 9 kW / 12 kW / 15 kW / 18 kW / 24 kW
Typical Stock Model	FLG-12650 – 480V / 12 kW, Φ12 mm tube, 650 mm overall length, approximately 3 kg

Optional: All stock configurations can be supplied with a built-in thermowell for temperature sensor installation according to application requirements.

Remarks

• Stock models are available in common flange sizes, heating tube diameters, immersion lengths, and power ratings.
• Non-standard dimensions and electrical specifications can be manufactured according to customer requirements.
• A thermowell can be added to provide installation space for a thermocouple or RTD.
• For heavy oil and high-viscosity media, a lower surface watt density should be selected to reduce localized overheating.
• Sheath material should be selected according to the liquid composition, temperature, and corrosion conditions.
• For corrosive liquids, titanium, PTFE-coated, Incoloy, or other suitable materials can be considered.
• The heating element must remain properly immersed in the heating medium during operation.

Flanged Immersion Heater Applications

The flanged immersion heater transfers heat directly from the heating elements into the liquid, providing an efficient solution for industrial liquid heating and temperature maintenance.

Water, Oil and Storage Tank Heating

Flanged immersion heaters can be installed in water tanks, storage tanks, oil tanks, and process vessels for heating and temperature maintenance of water, thermal oil, heavy oil, and other compatible liquids.

Petrochemical and Industrial Process Heating

These heaters are suitable for industrial process equipment in petroleum, petrochemical, machinery manufacturing, surface treatment, and electroplating applications where direct liquid heating is required.

Food and Beverage Processing

Flanged immersion heaters can be used in ingredient tanks, cleaning tanks, brewing equipment, and pasteurization systems when the heater material and construction are suitable for the specific process.

Corrosive Liquid Heating

For corrosive salt solutions, acidic or alkaline media, and other demanding chemical applications, corrosion-resistant sheath materials such as titanium, PTFE-coated elements, or suitable Incoloy materials can be selected.

Boilers and Industrial Equipment

Flanged immersion heaters can be integrated into hot water boilers, industrial cleaning machines, hydraulic oil stations, dishwashing equipment, and other process heating systems.

Custom Flanged Immersion Heater

EaseWise supports OEM and non-standard flanged immersion heater manufacturing. We can customize the heater according to your tank dimensions, liquid type, required heating capacity, installation space, and electrical requirements.

• Custom flange diameter and bolt pattern
• Custom NPT or BSP threaded flange
• Custom DN flange sizes
• Custom heating tube diameter
• Custom immersion length
• Custom voltage up to 600V
• Custom power rating
• Custom sheath material
• Custom flange material
• Thermowell for thermocouple or RTD
• Custom terminal and connection configuration
• OEM production according to drawings or samples

Please provide the liquid type, tank or vessel dimensions, required temperature, voltage, power, immersion length, and flange specification when requesting a customized flanged immersion heater.

Contact EaseWise

For pricing, stock availability, technical specifications, or custom flanged immersion heater solutions, please contact our sales team.

Amy – Sales

Tel: +86 188 8318 8154

Email: amy-easewise@tzheater.com

WhatsApp: +86 188 8318 8154

Hanna – Sales

Tel: +86 173 5163 6811

Email: hanna-easewise@tzheater.com

WhatsApp: +86 173 5163 6811

Need a custom flanged immersion heater? Send us your flange size, heating length, liquid type, voltage, power, and quantity for a quotation.