Is the secondary stabilizer box installed there in the nurses' station?

Is the questioner asking "Is the secondary stabilizer box installed at the nurses' station"? No. The secondary pressure regulator is usually installed at the back of the medical gas supply line system, before the medical gas enters the medical gas alarm box, not at the nurses' station. The secondary pressure regulator box is also called the secondary decompression shut-off valve box, in fact, is connected in series to the gas pipeline a device, "shut-off" role is to connect or close the pipeline, to facilitate the detection and maintenance, generally using linear ball valves.