I am having issues with solids building up in the 10” discharge ball valves on Mother Liquor Pumps that prevent operations from being able to close the valve. I have had a few discussions regarding ways to improve or eliminate this issue which have included insuring the valve is insulated/traced and replacing the valve with a ball valve with a ball stop. I am not very familiar with the ball stops, but from a little research I do not think it would be enough to help alleviate the solids build up in the valve since the solids pack and become concrete like. Another recommendation I was looking into was replacing the valve with a gate valve, but it would need to be actuated so operators could throttle the pump during startup. Does anyone have any suggestions on how to fix this issue or possible solutions?