Rotary Valves are used for the modulation and regulation of the flows. Basically, these can reduce the flow rate to a certain level that is safe and suitable to the process being started. These possess assorted significant benefits over the conventional assemblies. This is accessible with a high compression ratio and high rpm. Rotary Valves allow for more power. The have a compact as well as light-weight cylinder head. Utilization of these can enable the reduced complexity, higher functional reliability and lessened functional & maintenance cost.