http://rds.yahoo.com/_ylt=A0WTefcVMu1I6W...6sigb=138e8o3rt

Something like above only bigger. We use one here at work to clear sightports on high temp furnaces, it blows nitrogen through the tube and the 3rd line pulls out debris from the sight port.

Last edited by 14737; 10/08/08 05:23 PM.