Abnormal noise when supplying water with Wilan ball valves
Thread Content
When the delayed coking unit is used for cold coking, a thudding sound is produced by the feedwater ball valve due to water hammer; turning down the steam injection via the bellows eliminates this noise. However, it is not possible to keep it closed for long periods, as there is a risk of coking forming if it is forgotten to be reopened. What causes it? What are the solutions?
My guess is that it’s either due to excessive leakage from the steam seal protection or high steam pressure
The steam pressure is stable; I’m not sure if it’s due to an excessive gap in the valve