Removable heating elements are easy to service. Fast cooking recovery: unit can operate as high as 50 PSI or 298 degrees F. Solid state temperature controller enables operator to accurately adjust kettle temperature between 90 and 298 degrees F to provide increased flexibility of application. Additional standard features include a standard type 316 stainless steel liner, pressure gauge, safety valve, low water cut-off and low water indicator light. Kettles are filled with a mixture of water and glycol (anti-freeze) from the factory.