Our Screw Plug Immersion Heaters offer a compact, cost-effective, and highly efficient solution for heating liquids in smaller vessels. By welding tubular heating elements directly into a threaded plug, these units provide a simple "screw-in" installation that saves space and time.

Perfect for commercial water heaters, small oil tanks, and machinery sumps, these heaters deliver reliable performance where space is limited but heating power is essential.

Key Features & Advantages

- Space-Saving Design
 Compact construction allows installation in tight spaces and smaller tanks where a large flange would be impractical.

- Simple Installation
 Easily screws into a welded coupling or bung on the tank wall. No complex bolting required—just screw, seal, and connect.

- Versatile Element Configuration
 Elements are typically bent into U-shapes or hairpin loops to maximize heating surface area within a short immersion length.

- Corrosion Resistance
 Available in a wide range of sheath materials including Copper (for clean water), Stainless Steel (for general use), and Incoloy (for harsh chemicals).

- Built-in Thermostat Options
 Many models feature an integrated thermostat pocket, allowing you to mount a sensor directly to the heater for accurate temperature regulation.

- Cost-Effective
 An economical choice for low-to-medium power applications (typically up to 20 kW).

Technical Specifications

Parameter                                                    Specification
Product Type                     Screw Plug / Threaded Immersion Heater
Thread Sizes                      1/2" NPT, 3/4" NPT, 1" NPT, 1-1/4" NPT, 2" NPT, BSP options available
Power Rating                    200W – 25 kW
Voltage                                120V, 240V, 480V (1-Phase or 3-Phase)
Sheath Materials             Copper, Steel, Stainless Steel 304/316, Incoloy 800
Watt Density                     Low to High density options available based on fluid type
Terminal Enclosure      NEMA 1, NEMA 4X (Corrosion Resistant), or Cast Aluminum

Applications

- Commercial Water Heating: Electric boilers, coffee urns, and dishwashers.
- Lubrication Systems: Heating light oils and lubricants to maintain viscosity.
- Process Tanks: Small chemical or plating tanks requiring precise heat.
- OEM Equipment: Integrated into machinery for freeze protection or process heating.