No. SS2-AGV200-0001 Azbil Corporation - 8 - 4. Fluid conditions Please clear the fluid conditions as follows Calculation of the Cv values and expected noise Selection of Cv values: No. IB1-8000-0100 Selection of expected noise: No. IB1-8000-1700 Azbil Corporation has developed personal computer software to calculate Cv values and expected noise. Please specify if you require such a PC-based tool. Figure 15 Fluid flow Table 10 Fluid condition Mark Name Description - Fluid name Name or symbol of fluid to flow through control valve Q Flow rate Maximum (MAX), normal (NOR), and minimum (MIN) flow rates to be controlled P1 Upstream pressure Pressure on upstream side of control valve (P1 in Figure 15) P2 Downstream pressure Pressure on downstream side of control valve (P2 in Figure 15) ..P Differential pressure Pressure loss at control valve (..P in Figure 15) ..P close Differential pressure when fully closed Differential pressure when the valve is fully closed (actuator selection condition) Temp Temperature Temperature of fluid on upstream side G Specific gravity Specific gravity of the fluid V Viscosity Viscosity at the temperature of the fluid on upstream side - Flashing % Weight percentage of flashing to occur on downstream side when pressure is reduced by the control valve ΔP Q P1 P2