-适用于闭式循环系统中，冷冻水和低温热水的的控制。 技术参数： 额定冲程 5.5mm 泄露量 0--0.02% Kvs 介质温度 1--120℃ 阀门特性 等百分比 允许工作压力 1600KPa 阀体 红铜CC491K(Rg5) 阀杆、阀芯和阀座 铬镍钢/黄铜 铜二通阀VVG44.15-0.25 铜二通阀VVG44.15-0.4 铜二通阀VVG44.15-0.63 铜二通阀VVG44.15-1 铜二通阀VVG44.15-1.6 铜二通阀VVG44.15-2.5 铜二通阀VVG44.15-4 铜二通阀VVG44.20-6.3 铜二通阀VVG44.25-10 铜二通阀VVG44.32-16 铜二通阀VVG44.40-25 铜三通阀VXG44.15-1 铜三通阀VXG44.15-4 铜三通阀VXG44.20-6.3 铜三通阀VXG44.25-10 铜三通阀VXG44.32-16 铜三通阀VXG44.40-25 铜二通阀VVG41.11(Kvs:0.63) 铜二通阀VVG41.12(Kvs:1) 铜二通阀VVG41.13(Kvs:1.6) 铜二通阀VVG41.14(Kvs:2.5) 铜二通阀VVG41.15(Kvs:4) 铜二通阀VVG41.20(Kvs:6.3) 铜二通阀VVG41.25(Kvs:10) 铜二通阀VVG41.32(Kvs:16) 铜二通阀VVG41.40(Kvs:25) 铜二通阀VVG41.50(Kvs:40) 铜三通阀VXG41.1301 (Kvs:1.6) 铜三通阀VXG41.1401 (Kvs:2.5) 铜三通阀VXG41.15 (Kvs:4) 铜三通阀VXG41.20 (Kvs:6.3) 铜三通阀VXG41.25 (Kvs:10) 铜三通阀VXG41.32 (Kvs:16) 铜三通阀VXG41.40 (Kvs:25) 铜三通阀VXG41.50 (Kvs:40)