/emerson-exchange/b/weblog/posts/intelligent-positioner-improves-reliability-and-operation-of-the-esd-valveAlbert Yeats opened his presentation on the reliability and operation of ESD (Emergency Shut Down) valves by explaining why traditional shut-off valves are no longer suitable for today’s challenging applications. Users need large diameter SIL-rated valvesen-USTelligent Community 13