Screw Plug Heaters
Screw plug heater designed for precise immersion heating of liquids in industrial tanks and vessels, with advanced safety and control options.
Product configuration available with instant access to drawings, current lead times, and more.
-
Watlow® screw plug immersion heater is engineered for direct immersion heating of industrial liquids such as water, oils, solvents and process solutions. Designed for installation into tanks, vessels and piping systems, it ensures fast heat-up times, high thermal efficiency, and application reliability.
These heaters incorporate Watlow's proven WATROD® round tubular and FIREBAR® flat tubular elements. WATROD offers uniform heating and long life, while FIREBAR delivers high watt density and minimizes sheath temperature, making both ideal for immersion into liquids and challenging environments.
Optional features include thermocouple probes, over-temperature (OT) switches, and explosion- or moisture-resistant enclosures to meet safety and control requirements. Screw plug heaters can be shaped to fit your system and are available in various sizes, watt densities, and materials.
Common applications include:
• Foodservice and plastic processing
• Chemical tanks and lubricant heating
• Medical and analytical equipment
• Power generation and semiconductor systemsConfigurable through Watlow SELECT®, these screw plug heaters support a broad range of thermal applications with fast delivery and expert engineering guidance.
-
Description Information Material Alloy 800/840 Maximum Operating Temperature - C 870 ºC Maximum Operating Temperature - F 1600 ºF Maximum Watt Densities 18.6 W/cm^2 Maximum Watt Densities 120 W/in^2 Description Information Material N/A Maximum Operating Temperature - C 175 ºC Maximum Operating Temperature - F 350 ºF Maximum Watt Densities 18.6 W/cm^2 Maximum Watt Densities 120 W/in^2 Description Information Material Stainless Steel Maximum Operating Temperature - C 650 ºC Maximum Operating Temperature - F 1200 ºF Maximum Watt Densities 18.6 W/cm^2 Maximum Watt Densities 120 W/in^2 Description Information Material Steel Maximum Operating Temperature - C 400 ºC Maximum Operating Temperature - F 750 ºF Maximum Watt Densities 18.6 W/cm^2 Maximum Watt Densities 120 W/in^2 -
Downloads
Brochure
Catalog
Engineering Bulletin
Specification Sheet
-
Watlow® screw plug immersion heater is engineered for direct immersion heating of industrial liquids such as water, oils, solvents and process solutions. Designed for installation into tanks, vessels and piping systems, it ensures fast heat-up times, high thermal efficiency, and application reliability.
These heaters incorporate Watlow's proven WATROD® round tubular and FIREBAR® flat tubular elements. WATROD offers uniform heating and long life, while FIREBAR delivers high watt density and minimizes sheath temperature, making both ideal for immersion into liquids and challenging environments.
Optional features include thermocouple probes, over-temperature (OT) switches, and explosion- or moisture-resistant enclosures to meet safety and control requirements. Screw plug heaters can be shaped to fit your system and are available in various sizes, watt densities, and materials.
Common applications include:
• Foodservice and plastic processing
• Chemical tanks and lubricant heating
• Medical and analytical equipment
• Power generation and semiconductor systems
Configurable through Watlow SELECT®, these screw plug heaters support a broad range of thermal applications with fast delivery and expert engineering guidance.
| Description | Information |
|---|---|
| Material | Alloy 800/840 |
| Maximum Operating Temperature - C | 870 ºC |
| Maximum Operating Temperature - F | 1600 ºF |
| Maximum Watt Densities | 18.6 W/cm^2 |
| Maximum Watt Densities | 120 W/in^2 |
| Description | Information |
|---|---|
| Material | N/A |
| Maximum Operating Temperature - C | 175 ºC |
| Maximum Operating Temperature - F | 350 ºF |
| Maximum Watt Densities | 18.6 W/cm^2 |
| Maximum Watt Densities | 120 W/in^2 |
| Description | Information |
|---|---|
| Material | Stainless Steel |
| Maximum Operating Temperature - C | 650 ºC |
| Maximum Operating Temperature - F | 1200 ºF |
| Maximum Watt Densities | 18.6 W/cm^2 |
| Maximum Watt Densities | 120 W/in^2 |
| Description | Information |
|---|---|
| Material | Steel |
| Maximum Operating Temperature - C | 400 ºC |
| Maximum Operating Temperature - F | 750 ºF |
| Maximum Watt Densities | 18.6 W/cm^2 |
| Maximum Watt Densities | 120 W/in^2 |