常闭阀 [机] normally-closed valve
- 作持压阀用时,球阀C常闭或用丝堵换下。
For holding pressure valve, the valve C normally closed or replaced with a wire blocking. - 报警输出:常开常闭信号,控制排风扇,电磁阀信号。
Alarm output: frequent on or off signal, control exhaust fan, electrical magnetic valve signal. - 带有信号输出端口:由电子控制主板里的常开、常闭、公共三个端口引线可外接电磁阀或增压泵。
S with signal output port: by electronic control in the mainboard to often open and closed, public three port fuses can external electromagnetic valve or booster pump.