valve grinding patents

valve grinding patents

Abstract. Agrinding apparatusforgrindingthe interior portion of avalvestem receiving area of avalve. The apparatus comprises a faceplate, a plurality of cams mounted to an interior face of the faceplate, a locking bolt to lock the faceplate at a predetermined position on thevalve, a movablegrinderand a guide tube for positioning an optical viewer proximate the area to be grinded

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