INNER RING PRESS-IN JIG FOR PIPE JOINT MADE OF RESIN

摘要

PROBLEM TO BE SOLVED: To easily and besides always uniformly and properly press an inner ring in the end part of a pipe in an expansion state and secure as extremely high-efficient press-in and a connection work are executed without needing preheating. SOLUTION: An expansion ring member 31 variable to minimum and maximum outside diameter dimensions through axial movement is fitted in the small diameter part 30a on the tip side of a holder 30 to insert and hold an inner ring 8. Further, the expansion ring member 31 is formed in a state to be varied to a maximum outside diameter dimension and a fixed structure to securely position the expansion ring member 31 at the holder 30 is formed releasably from fixing between the expansion ring member 31 and the holder 30.