BRANCH CUTOFF DEVICE

摘要

PURPOSE: A branch blocking device is provided to block only gas which is supplied to a branch pipe connected to a branch T and keep gas supply in the rest of region. CONSTITUTION: A branch blocking device comprises a housing(100), an outer pipe(200), an inner pipe(300), a screw pipe(400), a locking rod(500), a locking key, and a stopper(740) of a rubber material. The housing is installed in the upper part of a sandwich valve. The housing has a receiving part(110) which is penetrated up and down. The outer pipe is coupled to the upper part of the housing, and the outer pipe is rotated. The inner pipe is inserted to the inside of the outer pipe, and the inner pipe ascends and descends. The screw pipe ascends and descends the inner pipe. The locking rod passes through the inside of the screw pipe. The locking key is coupled to the locking rod. The stopper is installed between an upper disk(730) and a lower disc(720). The stopper is compressed between the upper disc and the lower disc, and the stopper is expanded. The stopper shuts the opening part of the branch T.