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Regulated 1-1/4" NPT Screw Plug Immersion Heaters (With Thermostat Temperature Control)

If in doubt about what is required or best-suited for your application, please contact us at 1-724-872-5007 or

Regulated (With Thermostat):

  • 60°-250°F Thermostat Control: This is the default thermostat temperature range if you choose a regulated heater.
  • Alternate Temperature Ranges Are Available (Contact Us!):

            ●  30°-110°F
            ●  200°-550°F

NOTE - Regulated Models Require A Magnetic Contactor (sold separately) Unless They Are Rated:

  • ≤240V And Single-Phase With An Amperage Rating Of 25 Amps Or Less.

    Materials Available:

    If in doubt about which materials are required for your application, please contact us at 1-724-872-5007 or

    • INCOLOY® Sheath with Brass Screw Plug (Silver Brazed): Our EAQ2 models with 39-55 watt density (W/IN.²) are for use in clean water, some marine environments including brackish water and seawater with moderate to low currents, and select mildly corrosive liquids (absolutely no hydroxides, cyanides, or oxidizing acids).
    • INCOLOY® Sheath with Stainless Steel Screw Plug (Nickel Brazed or Welded): Our EAQ2-SSN models with 39-55 watt density (W/IN.²) are suitable for clean water and corrosive liquids, such as process water with less than 6% alkaline or acid content; up to 2% caustic solutions.  These models are also suitable for demineralized or deionized water.
    • Copper Sheath with Brass Screw Plug (Silver Brazed): Our ECQ2 models with 48-96 watt density (W/IN.²) are for use in clean water.
    • Steel Sheath with Steel Screw Plug (Nickel Brazed or Welded): Our ESQ2 models with 20-22 watt density (W/IN.²) are for use in oils.


          • NEMA 1, General Purpose Enclosure: the default enclosure type.

                      ●  Weather-Resistant Enclosures
                      ●  Explosion-Resistant Enclosures (Also Dust & Weather-Resistant)



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