Customized 380V Flanged Immersion Heater for Water Tank

Product Overview

Industrial flanged immersion heaters are designed for direct heating of liquids and gases inside tanks, vessels, pressure containers, thermal oil furnaces,reaction kettles,pipelines and other equipment via flange bolts, they are immersed directly into media for heating, making them the most widely used components for high-power industrial fluid heating.

They are widely used in industries including:

 • Water Treatment

 • Chemical Processing

 • Petrochemical

 • Food Processing

 • Pharmaceutical

 • Oil & Gas

 • Renewable Energy

 • Industrial Manufacturing

Whether heating water, thermal oil, diesel, glycol, corrosive chemicals, or cleaning solutions, our flange heaters provide reliable and long-lasting performance.

Why Choose Our Flanged Immersion Heater?

High Heating Efficiency

Direct immersion heating minimizes heat loss and ensures fast temperature rise.

Durable Construction

Manufactured with premium stainless steel or Incoloy sheath materials for extended service life.

Corrosion Resistant

Various sheath materials are available to suit different liquid media.

Available Materials

 • Stainless Steel 304

 • Stainless Steel 316L

 • Incoloy 800

 • Titanium

 • Copper

 • Carbon Steel

Fully Customizable

We manufacture according to customer specifications:

 • Voltage

 • Power

 • Heating Length

 • Flange Size

 • Thread Standard

 • Terminal Housing

 • Thermostat

 • Temperature Sensor

 • Explosion Proof Design

OEM & ODM Supported.

Easy Installation

Bolt-on flange connection allows convenient installation, maintenance, and replacement.

Product Features

Feature                   Description

Heating Type              Immersion Heating

Mounting                  Flanged

Heating Medium           Water, Oil, Chemicals

Max Temperature          Up to 850°C (element surface)

Power Range              1kW – 500kW

Voltage                   110V–690V

Flange Standard           ANSI, DIN, JIS, Custom

Control                   Thermostat / Thermocouple / RTD

Protection                 IP65 / Explosion Proof Optional

Applications

Water Heating

Perfect for:

 • Hot Water Tanks

 • Water Storage Tanks

 • Boiler Systems

 • Water Treatment Equipment

Oil Heating

Suitable for:

 • Hydraulic Oil

 • Lubricating Oil

 • Thermal Oil

 • Fuel Oil

 • Diesel

Chemical Heating

Designed for:

 • Acid Solutions

 • Alkali Solutions

 • Chemical Storage Tanks

 • Electroplating Tanks

Industrial Process Heating

Widely used in:

 • Heat Transfer Systems

 • Mixing Tanks

 • Reactors

 • Cleaning Equipment

 • Process Vessels

Technical Specifications

Item                 Specification

Voltage              110V / 220V / 380V / 415V / 480V / 600V

Power               1kW – 500kW

Flange Size          DN50–DN300 or Custom

Sheath Diameter      8mm / 10mm / 12mm / 16mm

Sheath Material       SS304 / SS316L / Incoloy800 / Titanium

Heating Element      NiCr Resistance Wire

Insulation            High Purity MgO

Temperature Control  Optional

Thermocouple        Optional

Junction Box         Weatherproof / Explosion Proof⸻

Available Options

Flange Standards

 • ANSI

 • DIN

 • JIS

 • GB

 • Custom Design

Terminal Enclosures

 • Standard Junction Box

 • Waterproof Junction Box

 • Explosion Proof Enclosure

Optional Accessories

 • Thermostat

 • PT100 Sensor

 • Thermocouple

 • Temperature Controller

 • Control Cabinet

 • Over-temperature Protection

Product Structure

A flanged immersion heater typically consists of:

 • Heating Elements

 • Flange

 • High Purity MgO Insulation

 • Resistance Wire

 • Terminal Pins

 • Junction Box

 • Temperature Sensor (Optional)

 • Protective Sleeve

How It Works

The resistance wire inside the heater generates heat after power is applied.

The heat transfers through the magnesium oxide insulation to the metal sheath and finally into the surrounding liquid.

Because the heating elements are immersed directly in the medium, almost all generated heat is transferred efficiently into the liquid.

Advantages Compared with Other Heating Methods

Flanged Heater                  Steam Heating

Fast Heating                     Slow

High Efficiency                   Heat Loss

Precise Temperature Control       Difficult

Easy Maintenance                Complex

Lower Operating Cost             Higher⸻

Custom Manufacturing

We provide complete customization.

Available customization includes:

 • Voltage

 • Wattage

 • Flange Size

 • Heating Length

 • Heating Zone

 • Sheath Material

 • Thermostat

 • Explosion-proof Design

 • Cable Length

 • Surface Load

Simply send us your drawing or specifications.

Quality Assurance

Every heater is tested before shipment.

100% Factory Tests:

 • Insulation Resistance Test

 • Hi-pot Test

 • Power Test

 • Dimension Inspection

 • Appearance Inspection

Packaging

Standard Export Packaging

 • Bubble Protection

 • Carton

 • Wooden Case

 • Custom Packaging Available

Worldwide Shipping Available.

FAQ

What liquid can be heated?

Water, thermal oil, hydraulic oil, diesel, glycol, chemicals, cleaning solutions, and many other industrial liquids.

Can you manufacture according to drawings?

Yes.

OEM and custom manufacturing are our specialties.

Can explosion-proof heaters be supplied?

Yes.

ATEX or customized explosion-proof solutions are available.

How do I select the correct heater?

Please provide:

 • Heating Medium

 • Tank Size

 • Required Temperature

 • Voltage

 • Power

 • Working Pressure

 • Flange Standard

Our engineers will recommend the most suitable solution.

What sheath material should I choose?

Different liquids require different materials:

 • Water → SS304 / SS316L

 • Corrosive Chemicals → Titanium

 • Thermal Oil → SS316L / Incoloy800

Why Choose HOTBOX?

 • 20+ Years Manufacturing Experience

 • Factory Direct Price

 • Custom Design Service

 • Fast Delivery

 • Strict Quality Control

 • Worldwide Export

 • Professional Engineering Support

 • Quick Response Within 24 Hours

Request a Quote Today

 Need a custom flanged immersion heater?

Contact our engineering team today for:

 • Free Technical Consultation

 • Product Selection Assistance

 • Fast Quotation

 • OEM Manufacturing

 • Global Shipping