CLOSING METHOD OF BALL INSERTION HOLE OF PIPE AND CLOSING TOOL

摘要

PURPOSE:To close a ball insertion hole of a pipe even when the pipe is a main pipe with a reverse seal hose installed on it. CONSTITUTION:A presser plate 30 formed on a circular arc surface matching to an inside surface 10 of a main pipe 6 with a reverse seal hose 9 adhered on it is brought into contact with the inside surface 10 by way of interposing an O ring 34 surrounding a ball insertion hole 11, and a bolt 40 erected on the presser plate 30 is fastened by pulling the presser plate 30 by a nut part 50 provided on a plug 55 inserted into the ball insertion hole 11 and bringing the O ring 34 into pressure contact with the inside surface 10.