Be applied to grinder of valve face

The utility model discloses a be applied to grinder of valve face, including grinding apparatus, shrouding, air compression unit, gas supply pipe, the disk seat opening is lived with the shutoff to the grinding apparatus setting on the valve face of stop valve valve body and with the valve face laminating, the department at the outflowing port in the chamber of effluenting is established to the sealed lid of shrouding, the air compression unit with gas supply pipe connects, the chamber of effluenting that gas supply pipe passed shrouding and valve body communicates and with the gas delivery in the air compression unit to the intracavity that effluents, makes the grinding apparatus relapse to be fallen after rise and beat the valve face after the jack -up. Compared with the prior art, the utility model discloses a setting up on the valve face and being used for the grinding apparatus of refacing a valve, to aerifing in the chamber of effluenting of valve body, make the grinding apparatus relapse to be fallen after rise and beat the valve face after the jack -up, realize beaing the grinding to valve face reciprocal, the grinding mode is simpler, can effectively prevent the slide mark to appear at the valve face, has effectively improved the grinding efficiency.