The defense industry is in a constant need and frequently uses precise heating equipment for many applications. Flanged immersion heaters are used in fuel preheating processes and lube oil heating due to their flexibility which includes the ability to select the exact type of flange required, fittings as well as desired lengths that meet tank requirements. Circulation heaters are used in conjunction with demineralized water storage tanks to help with the process and heating control requirements. Available in a wide range of wattages, terminal enclosures, vessel sizes and flanges, these heaters are sometimes also referred as inline heaters. Pipe heaters are inserted in pipes that do not come into contact with the liquid to be heated. Large tanks often use these heaters for benefits such as easy maintenance, customized terminal enclosures and easy replacement. Duct heaters are used for temperature control of air supply.