VVF31.15-2.5 VVF31.15-4 15 2.5 4 300 1000 300 1000 300 1000 VVF31.24 VVF31.25-6.3 VVF31.25 VVF31.25-10 25 5 6.3 7.5 10 300 1000 300 1000 300 1000 VVF31.39 VVF31.40 VVF31.40-25 40 12 19 25 300 525 300 775 300 1000 VVF31.50 VVF31.50-40 50 31 40 300 325 300 475 300 1000 VVF31.65 VVF31.65-63 65 49 63 175 175 275 275 300 750 VVF31.80 VVF31.80-100 80 78 100 100 100 175 175 300 500 VVF31.90 VVF31. 100 124 160 200 300 VVF31.91 VVF31. 125 200 250 150 200 VVF31.92-300 VVF31. 150 300 315 100 125 △Pmax阀门允许压差；△Ps阀门关闭压差
