Screw plug immersion heaters are a specific type of immersion heater ideal for direct immersion heating of liquids, including all types of oils and heat transfer solutions. Available in a variety of sizes, Watlow® screw plug immersion heaters feature both WATROD™ round and FIREBAR® flat tubular elements.
Heating elements are hairpin bent and either welded or brazed into the screw plug —depending on element sheath and plug material compatibility. General purpose terminal enclosures are standard; with optional moisture resistant, explosion resistant and explosion/moisture resistant enclosures available to meet specific application needs. Optional thermostats provide convenient process temperature regulation to the screw plug immersion heater.
|Material||Maximum Opening Temperatures||Maximum Watt Densities|
|Features & Benefits:|
|A variety of element sheath and screw plug materials||
|Welding or brazing WATROD and FIREBAR elements to the screw plug||
|WATROD hairpins are repressed (recompacted)||
|2 ½ in. (64mm) NPT screw plug assemblies feature element support(s)||