The longitudinal fracture arosed in connectingnut for inlet flushing valve.
冲洗阀出现进水端连接螺母纵向断裂。
2
The process see chart 7 Firstly, release the pressure of control valve, and disassemble control pipeline and loosen connectingnut before take out the actuator.
压力阀的拆装步骤见图7 首先把控制阀压务释放，拆卸控制管线，松开连接执行器联接螺母，取下执行器。
3
Through the failure analysis of connecting bolt of down rod, it points out that it is not correct to put the thinner nut outer side if the double nut anti-loose method is adopted.