I run a Flow Waterjet currently running the Hypertherm automation system.  My current issue that has been causing delays to my production is the following:

When I have my abrasive ready and my pressure is set to the desired specification I turn on the abrasive switch to enable the initial pierce when all of a sudden I hear a pop and the HP water blasts up the Pazer nozzle plugs with some of the water being pushed up the actual abrasive line into the actual sand lines.

I have taken apart the paser body many times and changed mixing tubes as well as the orifice assembly and i am still having the same blast of HP water.

As entertaining it is to see the plugs blasts into the oblivion i really need to get this fixed.  Has anyone had a similar issue??