Who knows what the hydraulic component is?
From left to right: oil mist, pressure-reducing valve, oil and water separator (commonly known as pneumatic triplets), gas storage tanks, stop valves (water discharge)
Globe valve Is it hydraulic or pneumatic? Right to left: cut-off valve (ball, deadline, lock...) Gas tank (small), filter, pressure-reducing valve, oil mist...
That means you can adjust it manually, the last one is a silencer, you know, you know it's a manual adjustment, except for this one