Azbil Corporation No. SS2-D1S100-0100 Cv value and flow characteristics Table 1. Cv Value Nominal size Port size Cv value inch mm inch mm 1/2, 3/4 and 1 15, 20 and 25 1/8 3 1 3/16 5 1.5 1/4 6 2 5/16 8 3 3/8 10 4 1/2 15 5 3/4 20 9 1 25 13 1-1/2 40 1-1/2 40 30 1-1/4 32 20 1 25 13 2 50 2 50 50 1-1/2 40 30 1-1/4 32 20 2-1/2 65 2-1/2 65 80 2 50 50 1-1/2 40 30 3 80 3 80 110 2-1/2 65 80 2 50 50 4 100 4 100 200 3 80 110 2-1/2 65 80 6 150 6 150 400 5 125 300 4 100 200 8 200 8 200 640 6 150 400 5 125 300 10 250 10 250 * 8 200 * 6 150 * 12 300 12 300 * 10 250 * 8 200 * * Contact your Azbil sales office. Figure1 Face-to-face and external dimensions b. For diaphragm actuator with top hand wheel c. For diaphragm actuator with side hand wheel a. For diaphragm actuator 3 1 14