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"AB" Flanged Immersion Heaters

Flanged Immersion Heater

The "AB" and Compact "AB" series of Flanged Immersion Heaters offers an alternative to Screw Plug Heaters. Consider the benefits of a convenient flanged design on your next screw plug heater application. Contact us for a brochure on the "A/B" Series.

Warren Electric Corporation proudly introduces the "AB" Family of Immersion Heaters designed to replace Screw Plug Heaters.

Screw Plug HeatersImmersion Heater Replacement Made Simple by considering our "AB" Family of Flanged Heaters.

Flange Immersion Heater "AB" Flanged heaters can be removed and installed using a 7/16" ratchet,

Screw plug heaters often require a large wrench to remove and install.

Click here to download installation instructions

The "AB" series Flanged Immersion Heaters:

  • Makes Replacement Easier
  • Reduces Replacement Time
  • Saves on Labor Costs
  • Allows Easy Installation In Limited Space


  • Includes All of the Options Available with NPT Screw Plug Heaters
  • Designed to Fit in 2", 2 1/2", and 3" Pipe
  • Tank Adaptors for Mounting these Heaters are Available
  • Adaptors are Available with Threaded Ends to Easily Convert an Existing Screw Plug Application to a Flange or with a Square Cut End for Welding into a Tank or Pipe
  • Can Replace Most Screw Plug Applications Eliminating Need for Large Wrenches (helpful in confined spaces)

Heater Specifications:

  • Wattage:
0.5 to 100 kilowatts
  • Voltage:
Up to 600 volts, Single or 3 phase
  • Std. Flange size:
4-1/2" Dia.
  • Compact Flange size:
3-1/2" Dia. for 2" Dia. pipe
4" Dia. for 2-1/2" Dia. pipe
  • Pressure rating:
Up to 300 PSIG
  • Flange Material:
Carbon Steel, Various Stainless Steels
  • Immersed length:
Up to 130 inches
Refer to Heater Element Sheath Material Options

WEC standard "AB" flanged heater has a flange diameter of 4-1/2", but do you need a more compact flange? Consider our Compact "AB" Series of Flanged Heaters. WEC offers as small as 3-1/2" diameter flanges for 2" pipe and as small as 4" diameter flanges for 2-1/2" pipe. For use with externally mounted thermal controls, the compact "AB" series provides the most size-efficient heater possible. For more information see our new "AB" & Compact "AB" Flanged Heater brochure or call our factory. We'll be happy to assist you with all of your immersion heater applications.

Our Applications Engineers and Technical Sales people are available to assist you. Please call our toll free "Heat Source" Hotline 1-877-399-HEAT (4328) or contact us.

"AB" Flanged Immersion Heaters & Adaptors

AB Flanged Immersion Heaters & Adaptors We’ve designed many adaptors that make flanged mounting an excellent alternative to screw plug process heaters.

In a few easy steps, WEC’s “AB” tank adaptors converts your screw plug heater application into a flanged heater application.

For existing Screw Plug replacements:

Screw Plug Heater Replacements Our fixed screw plug adaptor has a flange at one end and is threaded at the other. Just remove the existing screw plug heater, screw in the adaptor, insert the "AB" flanged heater, then simply tighten the bolts with a ratchet or box wrench.

Our swiveling screw plug adaptor takes this one step further. It has a flanged ring that rotates allowing you to position the conduit opening to the exact location needed.

For new tank designs,

Fixed Tank Adaptor for Flanged Heater Our fixed tank adaptor welds right to the tank and accommodates a flanged heater.

We also have the swiveling tank adaptor that you can weld directly to your tank and it rotates a full 360 allowing you to position the conduit opening to wherever you need it. TRY THAT WITH A SCREW PLUG!

  Complete the Warren Electric "Quick Quote"
For Assistance on Your Electric Heater Application!  

Below are some examples "AB" Flanged Immersion Heaters

Heater Replacement Made Easy

Flanged Immersion Heater from Screw Plug AdaptorThis heater features a compact 4" diameter flanged heater mated with a screw plug adaptor using six bolts. It's designed to convert your screw plug application to a flanged application for ease of future replacement. This drawing shows a rugged explosion resistant enclosure with multiple conduit openings. Threaded tank adaptors are available for 2", 2-1/2", and 3" pipe.

Location! Location! Location!

Swivel Tank Adaptor for Immersion HeaterInstallation is made easy using a swivel tank adaptor that allows exact positioning of the conduit opening. Our general purpose enclosure and external thermostat knob, as shown, offer ruggedness and ease of changing temperature settings. Swivel tank adaptors are available for 2", 2-1/2", and 3" pipe.

The Ultimate in Compactness

Compact Flanged HeaterThis heater features a compact 3-1/2" diameter flanged heater mated with a fixed tank adaptor using four bolts. Thermostats are mounted remotely as this compact enclosure and flange are designed for the tightest of spaces or where several heaters are used in tandem. Compact flanges and tank adaptors are available for 2", 2-1/2", and 3" pipe.

How to Order, PLEASE:
Phone icon Call the "HEAT SOURCE" Hot Line 1-877-399-HEAT (4328) Toll Free
Fax icon Fax Us 1-401-245-9331
Email icon Email Us wec@warrenelectriccorp.com
Download Icon Download a WEC "Quick Quote"
Online Icon Online Fill out a "Quick Quote" Online

Our Design Selector is also available online to assist you.