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

https://wiki-tonic.win/index.php/Picking_a_Specialist_for_Sewage-disposal_Tank_Pumping_and_Cleaning_on_a_Budget_plan

For hydro-jetting, separate the line, install a backflow preventer, start with lower PSI, then increase as needed, utilizing suitable nozzles to search biofilm, roots, and scale without harming pipes.