The plug or switch on top of the pressure gauge
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There is a plug or switch on top of the pressure gauge; what is its purpose – to balance the atmospheric pressure or something else?
It is probably to retain the oil inside; when in use, the small knob on the sieve needs to be unscrewed in order to create pressure
You’re referring to the shock-proof pressure gauge, right? It’s used for handling oil; it needs to be cut open when in use as it cannot remain sealed. Otherwise, if the gauge’s spring tube leaks, it can lead to safety accidents~
It must be used for pressure relief due to a leak in the reed tube!
I really didn’t notice that, thanks. It seems like we haven’t opened it yet
Ensures safety by preventing damage to the spring tube, as well as leakage of the medium that could damage glass and cause injury. The back part is used for pressure relief; this feature is highly valued and deserves extra points
The pressure is too high; it will burst out from there. It acts like a relief valve, preventing the pressure gauge from bursting due to high pressure and avoiding injury from glass shards