Skip to content
The last day to place an order for possible pre-Christmas delivery within the Continental United States is 12/15/23.
The last day to place an order for possible pre-Christmas delivery within the Continental United States is 12/15/23.

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): OuCO 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)

           

          • JAO Models: Jackson Dishwasher Booster Immersion Elements, 1" MPT Screw Plug

            Original price $ 0.00 - Original price $ 0.00
            Original price
            $ 0.00
            $ 0.00 - $ 0.00
            Current price $ 0.00
            Call for Availability

            Therm Coil JAO Models General Description For use in Jackson dishwashers. 1" MPT Screw Plug (MPT is a more specific NPT designation) #8-32 Screw T...

            View full details
            Original price $ 0.00 - Original price $ 0.00
            Original price
            $ 0.00
            $ 0.00 - $ 0.00
            Current price $ 0.00
            Call for Availability
          • ESO Models: Regulated Steel Sheath With Steel 1" NPT Screw Plug Immersion Elements

            Original price $ 0.00 - Original price $ 0.00
            Original price
            $ 0.00
            $ 0.00 - $ 0.00
            Current price $ 0.00
            Call for Availability

            Therm Coil ESO Models: Regulated Steel Sheath Elements With 1" NPT Steel Screw Plug: Series General Information: Steel Sheath with Steel Screw ...

            View full details
            Original price $ 0.00 - Original price $ 0.00
            Original price
            $ 0.00
            $ 0.00 - $ 0.00
            Current price $ 0.00
            Call for Availability
          • SO Models: Unregulated Steel Sheath With Steel 1" NPT Screw Plug Immersion Elements

            Original price $ 0.00 - Original price $ 0.00
            Original price
            $ 0.00
            $ 0.00 - $ 0.00
            Current price $ 0.00
            Call for Availability

            Therm Coil SO Models: Unregulated Steel Sheath Elements With 1" NPT Steel Screw Plug: Series General Information: Steel Sheath with Steel Screw...

            View full details
            Original price $ 0.00 - Original price $ 0.00
            Original price
            $ 0.00
            $ 0.00 - $ 0.00
            Current price $ 0.00
            Call for Availability
          • PO Models: 1" NPT Thread Brass Plug Screw-In Style Copper Element For Small Tank Applications

            Original price $ 0.00 - Original price $ 0.00
            Original price
            $ 0.00
            $ 0.00 - $ 0.00
            Current price $ 0.00
            Call for Availability

            Description High Watt Density With Superior Quality .315" diameter Copper Sheath Elements: Unlike many others, our replacement elements use comme...

            View full details
            Original price $ 0.00 - Original price $ 0.00
            Original price
            $ 0.00
            $ 0.00 - $ 0.00
            Current price $ 0.00
            Call for Availability
          • 1" NPT Brass plug With 12" Copper Immersion Element: 3,500W @120V; 107W/IN.² For Small Tank Applications

            Original price $ 0.00 - Original price $ 0.00
            Original price
            $ 0.00
            $ 0.00 - $ 0.00
            Current price $ 0.00
            Call for Availability

            Description High Watt Density With Superior Quality .315" diameter Copper Sheath Elements: Unlike many others, our replacement elements use comme...

            View full details
            Original price $ 0.00 - Original price $ 0.00
            Original price
            $ 0.00
            $ 0.00 - $ 0.00
            Current price $ 0.00
            Call for Availability
          • EAO Models: Regulated Incoloy Sheath With Brass 1" NPT Screw Plug Immersion Elements

            Original price $ 480.00 - Original price $ 512.00
            Original price $ 480.00 - Original price $ 512.00
            Original price $ 480.00
            $ 408.00 - $ 435.20
            $ 408.00 - $ 435.20
            Current price $ 408.00
            2+ in stock

            Therm Coil EAO Models Incoloy Sheath Elements With Brass Screw Plug: If in doubt about which materials are required for your application, please co...

            View full details
            Original price $ 480.00 - Original price $ 512.00
            Original price $ 480.00 - Original price $ 512.00
            Original price $ 480.00
            $ 408.00 - $ 435.20
            $ 408.00 - $ 435.20
            Current price $ 408.00
            Save up to 17% Save %

          Compare products

          {"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

          Select first item to compare

          Select second item to compare

          Select third item to compare

          Compare