Heat tracing is a small bore pipe system that is laid along process piping and equipment inside the insulation, on one or both sides – inner and outer sides – of the process pipe. Heat tracing is used for heating up a process piping system using utilities such as steam, electricity etc. In engineering, the requirement for heating of piping and instruments, using heat tracing is normally indicated on the Piping and Instrument Diagram (P&IDs) or on the line list
A steam trap is a device used to discharge condensate and non-condensable gases with a negligible consumption or loss of live steam. Most steam traps are nothing more than automatic valves. They open, close or modulate automatically.