Watlow screw plug immersion heaters are ideal for direct immersion heating of liquids, including all types of oils and heat transfer solutions. Watlow screw plug immersion heaters feature WATROD® round and FIREBAR® flat tubular elements hairpin bent and, depending on element sheath and plug material compatibility, either welded or brazed into the screw plug for unparalleled performance.
By using WATROD® or FIREBAR® heating elements, these Watlow screw plug immersion heaters are rated up to 38kW and can generate watt densities up to 120 W/in2 and sheath temperatures up to 1600®F (depending upon sheath material).
Watlow screw plug immersion heaters are available with a wide array of options to tailor each heater to your particular application. To provide process temperature control, Watlow screw plug immersion heaters are equipped with integral thermowells which provide convenient temperature sensor insertion and replacement without draining the medium being heated. Type J or K thermocouples, which offer more accurate sensing of process and/or sheath temperatures, may be inserted into the thermowell or attached to the sheath of the Watlow screw plug immersion heater.
Additionally, there are a number of terminal enclosures available to protect wiring from moisture or corrosion. Explosion proof enclosures are also available. An optional light gives the operator visual indication of the heater's power status. A number of material and size options are also available with the Watlow screw plug immersion heater.
Please contact us to order a Watlow screw plug immersion heater. To help us determine which Watlow heater will best satisfy your application requirements, please determine as closely as possible the required NPT screw plug size and material, volts, watts, phase, number of circuits, number and type of elements, element size, and termination options of the heater you will need. Please consult the Watlow Screw Plug Immersion Heater Data Sheet PDF for additional information.
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