Screw plug
immersion heaters are ideal for direct immersion heating of
liquids, including all types of oils and heat transfer
solutions Available in a variety of stock and Made-to-Order
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 (NEMA 1 ) terminal enclosures are standard:
with optional moisture resistant (NEMA 4), explosion resistant
(NEMA 7) and explosion/moisture resistant (NEMA 7/4)
enclosures available to meet specific application needs.
Optional thermostats provide convenient process temperature
regulation
Performance Capabilities
Watt densities to 120 W/in2
Wattages to 38 kW
UL and CSA compliant
Passivated 316 stainless steel
sheath temperatures to 1200° F (650° C)
304 stainless steel sheath
temperatures to 1200° F (650° C)
