Screw Plug Heaters are constructed by brazing or welding elements into a hex pipe thread. These are intended for direct immersion into fluids and gases. The heater is to be installed via a threaded port in the tank or vessel. Screw plug heaters are available in a variety of pipe thread sizes and materials. The heating elements are offered in a number of materials suited to a variety of fluid heating applications. Terminal housings are available for indoor, outdoor (weather- proof NEMA 4) and hazardous (NEMA 7) environments. Many options are available including thermostats, high limit and process thermocouples or RTD sensors. Since we are a made to order company, we can offer a large selection of sizes and configurations which are not listed below. Please contact us for assistance with your application.<\/p>\n