The document describes the valve operation sequence for several steps of a process involving depressurizing, heating, cooling, pressurizing, and changing adsorbers A and B. It involves the opening and closing of multiple valves (KV1031A, KV1035A, etc.) during each step. For example, step 1 is to prepare for depressurizing A, which requires KV1031A and KV1035A to close and KV1032A to open. The process then continues through additional steps of depressurizing, heating, cooling, pressurizing, and changing between adsorbers A and B.