To provide a draining system for a pre-actuation type sprinkler facility, provided with a draining means which can be started without using an electric means for starting the draining means which drains water in the secondary side piping at the time of actuation error of a sprinkler head in a wet type pre-actuation type sprinkler facility.

The device is installed on the secondary side of a pre-actuation type flow water detection device 3 in which a valve is normally kept closed by fluid pressure in a control chamber on a back surface of a valve element, in such a way that fluid in the control chamber is discharged to open the valve in a case where a fire is detected based on a signal of a fire detector or a secondary side pressure reduction signal. Force in an opening direction is added by a resilient member 48 to the valve element 44 of the draining system 5. Normally, the valve element 44 is closed by fluid pressure in the secondary piping 7. A space 45 is provided along an opening/closing axis of the valve element 44, and a valve rod 46 fixed to the valve element 44 penetrates the space 45 to be installed. On the space 45, a valve closing means to set the valve element 44 onto the valve seat is provided.