Home Flange/threaded cartridge heaters

Flange & Threaded Cartridge Heaters

Our Flange and Threaded Cartridge Heaters are specifically designed for heating liquids in tanks, vats, and pressure vessels. By mounting the heater through a threaded coupling or a standard pipe flange, we ensure a secure, leak-proof installation and direct, efficient heat transfer.

Constructed with high-quality materials like stainless steel and Incoloy®, these heaters resist corrosion and can withstand high temperatures and pressures, ensuring a long service life and reliable operation.

Product Details

Specification	Standard Range	Options
Watt Density	Up to 100 W/in² (15.5 W/cm²)	Application-specific densities available
Voltage	120V, 240V, 480V (Single or Three Phase)	Custom voltages up to 600V
Sheath Material	304 SS, 316 SS, Incoloy® 800/840	Titanium, Copper, other alloys on request
Flange/Fitting Material	Brass, Stainless Steel	Steel, other specified materials
Threaded Fittings	1", 1-1/4", 2", 2-1/2" NPT	BSP, metric, and custom thread sizes
Flange Sizes	3" to 14" standard pipe flanges	Custom sizes and pressure ratings (150# to 2500#)
Temperature Control	Internal Thermocouple (Type J or K)	RTD sensors, high-limit cutouts

Specifications are typical. Final values depend on configuration and tolerances requested.

Efficient Heat Transfer

Direct immersion design ensures rapid and uniform heating, reducing energy consumption.

Robust Construction

Made with high-grade alloys for superior corrosion resistance and longevity in harsh environments.

Easy Installation

Standard NPT threading and flange sizes allow for simple, secure mounting in tanks and vessels.

Customizable

Fully configurable options for wattage, voltage, materials, and terminations to meet your exact needs.

Water & Fluid Heating

Ideal for process water, freeze protection, and heating viscous liquids like oils and waxes.

Chemical Processing

Heating corrosive solutions, acids, and caustics with appropriate sheath materials.

Food & Beverage

Sanitary applications for heating water, oils, and other food-grade liquids.

Petrochemical Industry

Heating oils, fuels, and other hydrocarbons in hazardous or non-hazardous locations.

Boilers & Steam Generation

Used as primary or backup heating elements in small to medium-sized boilers.

Renewable Energy

Heating thermal storage fluids in solar and other renewable energy systems.

Straight Leads

Most common. Cost‑effective.

Right‑Angle Leads

Tight spaces. Better strain relief.

Stainless Braid

Abrasion protection.

Stainless Overbraid + Heat Shrink

Moisture resistance.

Swaged End Disk

High watt density. Long life.

Grounded/Un‑grounded TC

Fast response or noise‑safe.

Get Pricing

Send your drawing or pick a size. We reply fast.

FAQ

1. What is the main difference between a flange heater and a threaded heater?

The primary difference is the mounting method. A threaded heater screws directly into a tapped hole in the side of a tank or vessel, making it ideal for smaller applications. A flange heater is bolted onto a matching flange welded to the vessel, providing a more robust seal suitable for larger tanks and higher pressures.

2. How do I choose the right sheath material for my application?

Selecting the correct sheath material is crucial for the heater's lifespan. Here’s a general guide:

Stainless Steel (304 & 316): Excellent for water, certain oils, and mildly corrosive solutions.
Incoloy®: Best for high-temperature applications and more corrosive solutions, including some acids.
Titanium/Copper: Used for specific chemical compatibility requirements.

If you're unsure, it's always best to consult our engineering team with details about the liquid you are heating.

3. What is watt density, and why is it important?

Watt density (measured in watts per square inch) refers to the heat output per unit of surface area on the heater sheath. It's a critical factor because a watt density that is too high for a particular liquid can cause it to burn or coke onto the heater's surface, leading to premature failure. For example, water can handle a high watt density, while oils and viscous fluids require a much lower one.

4. Can I control the temperature with these heaters?

Yes. Our heaters can be manufactured with an internal thermocouple (Type J or K) or an RTD sensor. This allows you to connect the heater to an external temperature controller for precise process control. We also offer built-in high-limit cutouts for over-temperature protection.

5. Are these heaters difficult to install and replace?

Not at all. They are designed for easy installation. Threaded heaters simply screw into a matching fitting, and flange heaters are bolted on. Because the heating elements are contained within the vessel, they can be easily removed for maintenance or replacement without needing to drain the entire tank, minimizing downtime.

Elekheat-Certification

More Related Products

Finned cartridge heater

Swaged High-density cartridge heaters

Miniature cartridge heaters

Flange/threaded cartridge heaters

We'd love to hear from you

Contact Us

Thank you for your interest in our cartridge heaters!
Whether you’d like to learn more about product specifications, request a custom solution, or request a quote, we’re happy to assist you.

Flange & Threaded Cartridge Heaters