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April 3, 2017 at 9:51 am
#11186
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Keymaster
Yes – that’s correct! I see that you got the questions correct on your re-attempt. Good job!
The diaphragm moves up and down as the gas pressures in the intake and exit fluctuate. Seeing the cutaway of an actual valve helps us to visualize it.
It’s important to keep the terms clear.
The intake into the valve is “unregulated” or “upstream”
The gas leaving the valve is “regulated” or “downstream”