For hydro-jetting, isolate the line, install a backflow preventer, start with lower PSI, then increase as needed

https://boisethyrg.raindrop.page/bookmarks-71565536

For hydro-jetting, isolate the line, install a backflow preventer, begin with lower PSI, then increase as required, using proper nozzles to scour biofilm, roots, and scale without hurting pipes.