what could be the reason for the damage of the valve plug end ,this valve ( Pump Minimum flow Valve ) is designed for up stream water temperature around 180c and pressure 250 barg and the down stream water temperature 180c and pressure around 8...
we have the gas air preheater damages parts as shown in the photo what could be the reason for the damage parts ?https://files.engineering.com/getfile.aspx?folder=e4b41a1b-5f27-43f6-be27-ad7f81b63136&file=PHOTO-2022-10-17-16-35-45_(1).jpg
It is observed after inspection of the LP steam turbine last stage which was running only couple weeks that the Erosion occurs in the trailing edge, do you have an explanations for this phenomena ?