Industrial Screw Plug Heaters for Efficient Liquid & Process Heating Wattco industrial screw plug heaters are designed for reliable, high-performance heating in tanks, reservoirs, and process equipment. Featuring a compact threaded design, high watt density, uniform heat transfer, custom voltage and wattage options, and CSA/UL-approved construction, these heaters are ideal for industrial liquid heating and process applications. Visit www.wattco.com or call 1-800-492-8826 to explore custom screw plug heating solutions. https://www.wattco.com/product_category/screw-plug-heaters/