Valve identification
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What kind of valve is the accessory valve? What does it do? Please express your opinions.
Do you have any complete photos? Where is the valve? The picture only shows the tank bottom, flange and blind plate
You are clearly not related to the valve.
You can’t tell it’s a valve! The material placed at the bottom looks like it!
The angle is unclear, the overall structure is not visible, and the valves are not visible.
Why does it look like the head blind plate of a pressure vessel?
There should be a pressure gauge near the pressure vessel.