Hi everybody! I am facing a problem with a contorl valve (Vee notch ball valve). My process requirement is 10" size valve and i wanted to make it 8" size by creating the pressure drop across valve around 30%. Does anyone help me to design a pipeline which can creat the pressure drop across the valve around 30% in the inlet pressure. My valve inlet pressure is 0.86 kg/cm2. If we can creat the pressure drop across the valve at full open condition around 30% then i can reach my requirement with the 8" valve insted of using 10" valve.