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A screw plug heater is a type of electric immersion heater designed to be installed in a tank, container, or pipe. The heating element in an immersion heater is usually controlled by a thermostat, which maintains the liquid at a preset temperature.
Aug 26, 2023 · Screw-plug immersion heaters have terminal enclosures for electrical connections and are made of hairpin tubular elements that have been welded or brazed into a screw plug. They can be screwed into a tank wall or other vessel through a threaded opening.
- Flanged Heaters
- Circulation Heaters
- Over-the-Side Heaters
- Screw Plug Heaters
- How to Choose The Right Type of Immersion Heater For Your Industry
Flanged heaters act as a sourceof direct heat to a liquid medium. They typically use hairpin elements or tubular bugle elements that extend from the flange’s face. These heaters usually contain thermowells that allow for the use of temperature reading devices such as thermocouples and thermostats to provide better temperature control. These devices...
Circulation heaters have a wide rangeof applications, making them a highly-prized type of industrial heater. The target fluid enters through an inlet that’s closest to the heater. The heater then applies heat to the liquid as it flows within a vessel. The fluid then exits the outlet and circulates through a piping circuit. How these heaters functio...
Over-the-side heatersare a type of immersion heater designed for installation outside of a tank or vessel. Usually, they are installed in the upper portion of the vessel, with brackets fastening the heater onto the tank wall. Over-the-side heaters often use copper, steel, cast alloy or titanium in their heating elements. Due to the mobility of thes...
Screw plug heatersare submersible heating elements that go directly into the tank or vessel. They deliver a direct transfer of heat, which allows liquids to heat up rapidly. Screw plug heaters contain hairpin tubular elements that are either brazed or welded into a pipe thread fitting. Screw plug heaters are ideal for smaller containers and vessels...
Depending on your application, the kind of immersion heat you need will likely be apparent. Of course, there are cases where you will need to assess the demands of particular processes and which immersion heater will best suit your needs. That may mean carrying out specific calculations and determining cost-benefit analyses. However, our Wattco rep...
Screw Plug / NPT Threaded - Screw plug immersion heaters are equipped with a tapered pipe fitting that screw into a threaded well. Tapered threads have a concentric thread diameter and are used for sealing without gaskets.
May 25, 2021 · Screw Plug Immersion Heaters: Screw plug heaters consist of hairpin shaped tubular electric elements welded to a threaded screw (generally 1” NPT up to 2.5” NPT) and placed directly through the tank wall or pipe coupling for heating. Screw plug immersion heaters are ideal small tanks requiring more precise and focused heating.
Jun 6, 2024 · Screw plug heaters. Similar to a flanged heater, screw plug heaters are installed directly into a tank so that the heating elements are completely immersed. The main difference, however, is that instead of a flange, these heaters are screwed into place.
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Screw plug immersion heaters are screwed directly through a threaded opening in a tank wall or through matching pipe coupling, half coupling or welding flange. Sizes of screw plug heaters are available with ½", ¾", 1", 1¼", 2" and 2½" pipe threads.
