Valve hole punching machine The Valve Hole Punching Machine is designed for automatic coining, punching and deburring valve holes in 13-18" rims for passenger cars and light trucks.The stations around the rotary table are......Valve hole punching machine The Valve Hole Punching Machine is designed for automatic coining, punching and deburring valve holes in 13-18" rims for passenger cars and light trucks.The stations around the rotary table are arranged as follows:Loading unit Coining device Punching device Deburring device Unloading unit