If cavitation in valve is ever encountered, consider the following corrective actions:
The first is to equip the control valve with special trim and ensure that the plug and
seat are made of a hard facing material that can resist both the onset and effect of
cavitation (e.g. stellite hard facing).
The second is to use a valve with a low recovery coefficient.
The third is to increase the downstream pressure by installing a flow restrictor if
possible or reducing the pipe size of a short piece downstream.