全闭状态 meaning in Chinese

full-shut position

Trial operation of valve should be done before install . open and close the valve by hand for a period . adjust the limit device of the valve gate accordingto the working system condition of user . install the valve in full close state when there is no mistake
安装前先试运行阀门，启闭一个周期，按客户工作系统要求对阀门限位装置作适当的调整（出厂时已作标准调整），运行无误后将阀门处于全闭状态再进行安装。