Development of Impulse Pressure System for a Large Size Butterfly Valve

Manufacturing companies have a need for performance and life test equipment to improve the detection of leakage and damage on the seat of valve discs. In the present study, in order to develop such equipment, we first obtained failure data information from the fields, analyzed failure modes based on field data collected from customers, and then obtained our own field data using measuring equipment. Second, we designed and manufactured specific performance and life test equipment. The concept used to fabricate this equipment can be adapted for use with other valves, for example, ball valves and gate valves of various sizes, ranging from 400 mm to more than 2,000 mm. Although increasing the pressure is not difficult in small-sized valve systems, large-sized valve systems require the use of super-large pumps to increase the valve’s internal pressure. Therefore, in this study, the impulse pressure reappearance technique was developed to solve flow shortage during durability test.