I have a chinese pressure regulator for a fire machine / flame cannon. It has 2 gauges ranging from .0 Mpa to 0.25 MPa and another ranging from 0 to 2.5 MPa.
I did the conversion here , trying to find a pressure regulator from the US that will replicate the chinese regulator. Seems like 30 psi = .2 MPa +/- . I called a propane regulator supply company that says the conversion is 72 psi . This left me a bit confused. Any thoughts?