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Screw Plug Immersion Heaters

Standard Features for Screw Plug Heaters

Screw Plug Immersion Heater

Information Sheet

Frequently Asked Questions

Warren Electric Corporation has been manufacturing QUALITY Industrial Screw Plug Electric Heaters since 1962. 


Screw Plug Immersion Heater with Explosion-Resistant Terminal Enclosure
WEC Screw Plug Heaters consist of tubular elements that are brazed or welded to a screw plug and provided with Terminal Enclosures suited for your application.


Screw Plug Immersion Heater
Screw Plug Heaters are screwed directly into a tank wall or through a matching pipe coupling. 


Screw Plug Immersion Heater with External Knob Thermostat
Screw Plug sizes up to 4 " NPT in Brass, Bronze, Carbon, and Stainless Steels are available.
Screw Plug Immersion Heater with Helmet Head Terminal Enclosure
Typical applications for screw plug heaters include, but are not limited to, process water heating, freeze protection, and the heating of oils, and heat transfer mediums.

We are dedicated to meeting and exceeding the needs and expectations of our customers for INNOVATIVE and RELIABLE heating solutions.

Whether it be STANDARD or CUSTOM, a REPLACEMENT or NEW DESIGN... please turn to us for COMPETITIVE PRICING and QUICK DELIVERY on your next Electric Heater application.

Screw Plug Specifications
Screw Plug Immersion Heater Specifications
  • Wattage:
0.5 to 100 kilowatts
  • Voltage:
Up to 600 volts, Single or 3 phase
  • Screw Plug size:
1" to 3" NPT
  • Pressure rating:
Up to 300 PSIG
Carbon Steel, Various Stainless Steels, Brass, Bronze
  • Immersed length:
Up to 130 inches
Refer to Heater Element Sheath Material Options

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.

Features / Options that are available in the manufacture of WEC flanged heaters include:


Download the Warren Electric "Quick Quote" or request a quote online for assistance on your electric heater application!


Additional Features / Options for Screw Plug Heaters

  Screw Plug Heater with heavy duty helmet head enclosurePlease NOTE: WEC also has an optional unique terminal enclosure for screw plug heaters. Helmet Head Heaters are a compact, versatile screw plug design with a terminal enclosure that makes installation in confined areas more manageable. This unique design offers benefits over conventional screw plugs such as compactness and superior resistance to mechanical impact. Please request our "HH Series" Brochure for more information.

Consider as an alternative to your Screw plug design, our...

"AB" Family of Flanged Immersion Heaters

Screw Plug Heater alternative - AB flanged heaterThe "AB" family of flanged heaters makes heater installation and replacement as easy as possible. Use our "AB" threaded adapter and "AB" flanged heaters to convert your screw plug application into a flanged application. Our welded tank adapter is available with a square end that gets welded directly to the tank wall. Both adapters can be provided with a swivel feature that allows you to position the terminal enclosure's conduit opening to any desired orientation. Please visit our "AB" flanged immersion heaters page or request our "AB Series" Brochure for more information.

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.