二通阀型号 三通阀型号 DN kvs[m3/h] Sv VVI47.15-2.5 VXI47.15-2.5 15 2.5 >50 VVI47.15-4 VXI47.15-4 15 4.0 VVI47.20-6.3 VXI47.25-10 20 6.3 >100 VVI47.25-10 VXI47.25-10 25 10 VVI47.32-16 VXI47.32-16 32 16 VVI47.40-25 VXI47.40-25 40 25 VVI47.50-40 VXI47. 50 40