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The Emergency Shutdown System-ESD control system is the long-range capital equipment which controls the surface safety valve / SSV. It is mainly make up by the control cabinet, manage ducts, etc. The surface safety valve(SSV), for often closing type. When use, The ESD control system urges the surface safety valve / SSV to be opened through the pressure medium. If keep driving the pressure, the surface safety valve/SSV will be in the state of opening all the time.

Emergency Shutdown(ESD) system Specification