Open formula machinery blow -down valve entirely

The utility model discloses an open formula machinery blow -down valve entirely, including have valve body with the export of medium runner of medium runner entry, set up the plug screw body on the valve body lateral wall, set up at the valve gap of valve body upper end, disk seat in the valve body cavity of position sleeve in the middle of arranging valve body and valve gap in, fastening, connect the adjusting ring on disk seat upper portion, with the disk seat form the sealed face of carbide the valve clack, install the continuous valve rod of recoil dish on the valve clack, one end and recoil valve snail line and arrange the regulating spring of valve gap inner chamber in. The utility model discloses simple structure, manufacture are convenient, and it is with the help of any external force, but utilize the discharge fluid of specified quantity of the power of medium itself to prevent that system's internal pressure from exceeding the safe operation that protection system equipment and pipeline are come to