218 PDCPD LARGE SIZE BUTTERFLY VALVE ROTARY DAMPER 0 50 100 Cv VALUE (%) OPENING DEGREE (%) 0 10 20 30 40 50 60 70 80 90 100 0 50 100 Cv VALUE (%) OPENING DEGREE (%) 0 10 20 30 40 50 60 70 80 90 100 0 50 100 Cv VALUE (%) OPENING DEGREE (%) 0 10 20 30 40 50 60 70 80 90 100 700 mm . 1,200 mm 40 mm . 350 mm 400 mm . 600 mm FULL-OPEN Cv VALUE mm 700 800 900 1,000 1,100 1,200 inch 28 32 36 40 44 48 FULL-OPEN Cv VALUE 32,000 43,000 55,000 70,000 86,000 100,000 FULL-OPEN Cv VALUE mm 40 50 65 80 100 125 150 200 250 300 350 400 inch 1 1/2 2 2 1/2 3 4 5 6 8 10 12 14 16 FULL-OPEN Cv VALUE 71 120 250 300 470 830 1,100 2,500 3,860 5,700 6,440 8,430