The Flow Control Valve comes as a part of the vent engine manifold of an Anesthesia Delivery System. It is used to control the gas flow through the Medium Pressure Oxygen Service (MPOS) manifold, which is provided as a part of the vent engine in Breathing Circuit Gas (BCG) of the ventilator. The assembly comes into contact with oxygen-enriched gas in the range of 50 to 3000 kPa. The components are corrosive resistant and hence it is highly efficient to use in medical environments.