<p>An Isolation Valve is a valve used to completely stop or completely allow the flow of fluid in a pipeline.</p> <p> </p> <p><strong>It is used to:</strong></p> <p>Shut off flow during maintenance</p> <p>Isolate equipment (pump, heat exchanger, tank, etc.)</p> <p>Provide safety during emergency</p> <p> </p> <p><strong>Main Purpose of Isolation Valves:</strong></p> <p>To isolate a section of pipeline</p> <p>To stop flow completely</p> <p>To protect downstream equipment</p> <p>For maintenance and repair work</p>