Medium pressure steam control system is a reciprocating power machine that converts steam energy into mechanical work. The advent of the steam engine led to the industrial revolution in the 18th century. It remained an important prime mover in the world until the early 20th century, when it gradually gave way to internal combustion engines and steam turbines. A steam engine is an engine that converts kinetic energy in steam into work. Steam engines were used to drive pumps, locomotives and ships. The steam engine played a fundamental role in the industrial revolution. Today, steam turbine engines are used to generate electricity.