Fault Analysis and Treatment of EAS Sump Line Isolation Valve

The EAS sump line isolation valve EAS013/014VB is often unable to open or close smoothly in the progress of commissioning tests on site. Based on online diagnoses and commissioning tests, this paper analyzes the possible reasons for the fault and finds out that the main reason is the electrical actuator. The valve modification scheme is proposed. The result of valve modification shows that the cost of valve purchase and commissioning can be reduced and the probability of valve failure can be reduced.