The open angle of the flow control valve is adjusted by electric actuator, which can be controlled remotely to meet the requirement of system measure.
流量控制阀由电动执行器调节开度，可实现远距离控制阀门的开度，以满足系统计量的要求。
2
The SPRD will automatically open as the air pressure in the duct system increases, in order to prevent the reduction of air flow and excessive noise and velocity through the duct system.
当管道系统空气压力增加时，SPRD会自动开启，以防止管道系统中空气流动的减少和过度噪音和速度。
3
Please everyone in publicity with general location, open, with unified user name and password: IFC log in, can be familiar with advertising system operation flow of.