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1" NPT Screw Plug Immersion Heaters

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

Available Unregulated (No Thermostat) 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 rheinhold@thermcoil.com.

    • INCOLOY® Sheath with Brass Screw Plug (Silver Brazed): Our AO and EAO models with 45-56 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 AO-SSN and EAO-SSN models with 45-56 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 CO and ECO models are for use in clean water.
    • Steel Sheath with Steel Screw Plug (Nickel Brazed or Welded): Our SO and ESO models are for use in lightweight oils.

          Enclosure:

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

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

           

          Filters

          • EAO-3041 Model: 3000W @ 240V 1-Phase 18" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Call for Availability

            EAO-3041 Model: 3000W @ 240V 1-Phase 18" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 512.00
            $ 512.00 - $ 512.00
            $ 512.00
            $ 435.20
            $ 435.20 - $ 435.20
            $ 435.20
            Call for Availability

            Therm Coil EAO-3041 Models Drawing Number: 358B-1020-012 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are requi...

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            $ 512.00
            $ 512.00 - $ 512.00
            $ 512.00
            $ 435.20
            $ 435.20 - $ 435.20
            $ 435.20
            Call for Availability
          • EAO-3011 Model: 3000W @ 120V 1-Phase 18" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Call for Availability

            EAO-3011 Model: 3000W @ 120V 1-Phase 18" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 512.00
            $ 512.00 - $ 512.00
            $ 512.00
            $ 425.20
            $ 425.20 - $ 425.20
            $ 425.20
            Call for Availability

            Therm Coil EAO-3011 Models Drawing Number: 358B-1020-010 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are requi...

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            $ 512.00
            $ 512.00 - $ 512.00
            $ 512.00
            $ 425.20
            $ 425.20 - $ 425.20
            $ 425.20
            Call for Availability
          • EAO-2041 Model: 2000W @ 240V 1-Phase 13-1/2" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Save 15% Save %

            EAO-2041 Model: 2000W @ 240V 1-Phase 13-1/2" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 494.00
            $ 494.00 - $ 494.00
            $ 494.00
            $ 420.75
            $ 420.75 - $ 420.75
            $ 420.75
            Low Stock

            Therm Coil EAO-2041 Models Drawing Number: 358B-1020-009 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are requi...

            View full details
            $ 494.00
            $ 494.00 - $ 494.00
            $ 494.00
            $ 420.75
            $ 420.75 - $ 420.75
            $ 420.75
            Save 15% Save %
          • EAO-1541 Model: 1500W @ 240V 1-Phase 11-3/8" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Call for Availability

            EAO-1541 Model: 1500W @ 240V 1-Phase 11-3/8" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 487.00
            $ 487.00 - $ 487.00
            $ 487.00
            $ 413.95
            $ 413.95 - $ 413.95
            $ 413.95
            Call for Availability

            Therm Coil EAO-1541 Models Drawing Number: 358B-1020-006 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are requi...

            View full details
            $ 487.00
            $ 487.00 - $ 487.00
            $ 487.00
            $ 413.95
            $ 413.95 - $ 413.95
            $ 413.95
            Call for Availability
          • EAO-1041 Model: 1000W @ 240V 1-Phase 11" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Call for Availability

            EAO-1041 Model: 1000W @ 240V 1-Phase 11" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 480.00
            $ 480.00 - $ 480.00
            $ 480.00
            $ 408.00
            $ 408.00 - $ 408.00
            $ 408.00
            Call for Availability

            Therm Coil EAO-1041 Models Drawing Number: 358B-1020-003 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are requi...

            View full details
            $ 480.00
            $ 480.00 - $ 480.00
            $ 480.00
            $ 408.00
            $ 408.00 - $ 408.00
            $ 408.00
            Call for Availability
          • EAO-2011 Model: 2000W @ 120V 1-Phase 13-1/2" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Save 15% Save %

            EAO-2011 Model: 2000W @ 120V 1-Phase 13-1/2" Immersion Length Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 494.00
            $ 494.00 - $ 494.00
            $ 494.00
            $ 420.75
            $ 420.75 - $ 420.75
            $ 420.75
            2+ in stock

            Therm Coil EAO-2011 Models Drawing Number: 358B-1020-007 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are requi...

            View full details
            $ 494.00
            $ 494.00 - $ 494.00
            $ 494.00
            $ 420.75
            $ 420.75 - $ 420.75
            $ 420.75
            Save 15% Save %
          • AO-611W Model: 600W @ 120V 1-Phase 9-1/4" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            AO-611W Model: 600W @ 120V 1-Phase 9-1/4" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 0.00 - $ 0.00
            $ 0.00
            $ 0.00 - $ 0.00
            $ 0.00
            3+ in stock

            Therm Coil AO-611W Model Drawing Number: 358D-1003-001 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are require...

            View full details
            $ 0.00 - $ 0.00
            $ 0.00
            $ 0.00 - $ 0.00
            $ 0.00
          • AO-1011 Model: 1000W @ 120V 1-Phase 11" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Save 15% Save %

            AO-1011 Model: 1000W @ 120V 1-Phase 11" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 375.00
            $ 375.00 - $ 375.00
            $ 375.00
            $ 318.75
            $ 318.75 - $ 318.75
            $ 318.75
            Low Stock

            Therm Coil AO-1011 Model Drawing Number: 358D-1003-002 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are require...

            View full details
            $ 375.00
            $ 375.00 - $ 375.00
            $ 375.00
            $ 318.75
            $ 318.75 - $ 318.75
            $ 318.75
            Save 15% Save %
          • AO-3041 Model: 3000W @ 240V 1-Phase 18" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Call for Availability

            AO-3041 Model: 3000W @ 240V 1-Phase 18" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 400.00
            $ 400.00 - $ 400.00
            $ 400.00
            $ 340.00
            $ 340.00 - $ 340.00
            $ 340.00
            Call for Availability

            Therm Coil AO-3041 Model Drawing Number: 358D-1003-015 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are require...

            View full details
            $ 400.00
            $ 400.00 - $ 400.00
            $ 400.00
            $ 340.00
            $ 340.00 - $ 340.00
            $ 340.00
            Call for Availability
          • AO-3011 Model: 3000W @ 120V 1-Phase 18" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Call for Availability

            AO-3011 Model: 3000W @ 120V 1-Phase 18" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 400.00
            $ 400.00 - $ 400.00
            $ 400.00
            $ 340.00
            $ 340.00 - $ 340.00
            $ 340.00
            Call for Availability

            Therm Coil AO-3011 Model Drawing Number: 358D-1003-005 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are require...

            View full details
            $ 400.00
            $ 400.00 - $ 400.00
            $ 400.00
            $ 340.00
            $ 340.00 - $ 340.00
            $ 340.00
            Call for Availability
          • AO-2041 Model: 2000W @ 240V 1-Phase 13-1/2" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Call for Availability

            AO-2041 Model: 2000W @ 240V 1-Phase 13-1/2" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 387.00
            $ 387.00 - $ 387.00
            $ 387.00
            $ 328.00
            $ 328.00 - $ 328.00
            $ 328.00
            Call for Availability

            Therm Coil AO-2041 Model Drawing Number: 358D-1003-014 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are require...

            View full details
            $ 387.00
            $ 387.00 - $ 387.00
            $ 387.00
            $ 328.00
            $ 328.00 - $ 328.00
            $ 328.00
            Call for Availability
          • AO-2011 Model: 2000W @ 120V 1-Phase 13-1/2" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Call for Availability

            AO-2011 Model: 2000W @ 120V 1-Phase 13-1/2" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 387.00
            $ 387.00 - $ 387.00
            $ 387.00
            $ 328.95
            $ 328.95 - $ 328.95
            $ 328.95
            Call for Availability

            Therm Coil AO-2011 Model Drawing Number: 358D-1003-004 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are require...

            View full details
            $ 387.00
            $ 387.00 - $ 387.00
            $ 387.00
            $ 328.95
            $ 328.95 - $ 328.95
            $ 328.95
            Call for Availability
          • AO-1541 Model: 1500W @ 240V 1-Phase 11-3/8" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Call for Availability

            AO-1541 Model: 1500W @ 240V 1-Phase 11-3/8" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 377.00
            $ 377.00 - $ 377.00
            $ 377.00
            $ 320.45
            $ 320.45 - $ 320.45
            $ 320.45
            Call for Availability

            Therm Coil AO-1541 Model Drawing Number: 358D-1003-013 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are require...

            View full details
            $ 377.00
            $ 377.00 - $ 377.00
            $ 377.00
            $ 320.45
            $ 320.45 - $ 320.45
            $ 320.45
            Call for Availability
          • AO-1041 Model: 1000W @ 240V 1-Phase 11" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements
            Call for Availability

            AO-1041 Model: 1000W @ 240V 1-Phase 11" Immersion Length Unregulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            $ 375.00
            $ 375.00 - $ 375.00
            $ 375.00
            $ 318.75
            $ 318.75 - $ 318.75
            $ 318.75
            Call for Availability

            Therm Coil AO-1041 Model Drawing Number: 358D-1003-012 Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are require...

            View full details
            $ 375.00
            $ 375.00 - $ 375.00
            $ 375.00
            $ 318.75
            $ 318.75 - $ 318.75
            $ 318.75
            Call for Availability

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