In addition, indoor air system, heat recovery systems, central vacuum system, fire doors SolenoidValve Control system and indoor fire hose system configurations are rare in China.
Vacuumsolenoidvalve, is used for vacuum piping system, or vacuum equipment, electromagnetic valve is used to control the vacuum.
是指用于真空负压管道系统，或者真空设备上，用来控制真空的开关的电磁阀。
3
CF pneumatic high vacuum flapper valve USES solenoid directional valve to change the direction of air passage, and controls the actuating cylinder to drive the valve opened and closed.