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Screw Plug Immersion Heaters information

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Screw Plug Heaters are ideal for heating a wide variety of applications.  Available with or without thermostats, they can be made with General Purpose, Weather-Resistant or Explosion-Resistant Terminal Enclosures.

Screw Plug Heaters are heaters with tubular elements brazed or welded into NPTs.  They are available with immersed lengths available up to 130 inches. usually designed from 0.25 KW to 100 KW for mounting via 1”, 1 ¼”, 1 ½”, 2”, 2 ½”, 3” and 4” NPT screw plugs for up to 300 PSIG pressure rating. 

They are generally used to heat a known volume of fluid to desired operating temperature.  Sheath materials include Copper, Steel, Stainless 321, Stainless 316L and Incoloy 840.  Sheath selection is determined by the user’s knowledge of the chemical composition of the medium being heated, corrosiveness, contaminants, and controls.


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.

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


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.

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.