pre-208风机盘管阀门设计用于供暖和制冷暖通空调系统中热水和冷水的开/关控制。配备了具有弹簧复位机构的单相磁滞同步电机和阀体式执行器。 pre-208 is designed to control on/off of the cooling/heating water in hvac. with spring return setup, single phase hysteresis synchronous motor and valve actuator. 技术数据 technical parameter 电源信号 power signal 230v/110v/24v ac 控制信号 control signal 开/关 on/off 开启时间 start time 8…10s 功率 power consumption 7w 介质温度 medium temperature -10…+90°c 压力等级 pressure level pn16 连接件 connecting 内螺纹 internal thread 阀体材质 valve material 黄铜 brass 驱动器外壳材质 actuator cover material 铝合金+塑料aluminium alloy+plastic 防护等级 protection level ip32 型号 model no. 阀门 valve 规格specification kvs 关闭压差 closed differential pressure pre-208-15 2通two-way dn15 1.5 350kpa pre-208-20 2通two-way dn20 2.5 300 kpa pre-208-25 2通two-way dn25 4.8 200 kpa