WATERTIGHT SHAFT HOUSING STRUCTURE FOR BUTTERFLY VALVE

摘要

The present invention relates to the watertight shaft housing structure for a butterfly valve and, in particular, has the effects: preventing fluid from infiltrating the shaft housing part of a body in which a butterfly valve shaft is inserted; extending the service life of a valve by securing the watertightness of the shaft housing part of the butterfly valve while providing a bushing structure and a sealing material structure which do not affect the torque of the shaft, and prevent corrosion of the shaft housing part by blocking fluid infiltration at the shaft housing part of the butterfly valve; and preventing water contamination when the butterfly valve is used in a water supply pipe by preventing fluid contamination due to the corrosion of the shaft housing part.