Our Sspunding valve is measured in bars which is a different conversion of psi. The bar is a metric unit of pressure. It is defined as exactly equal to 100k Pascals, which is slightly less than the current average atmospheric pressure on Earth at sea level. You can convert bars using the rate 1 bar = ~14.50 psi.
These Sspunding valves have a Max of 2 bar (close to 30psi) and you can convert bars to PSI using the rate 1 bar = ~14.50 psi.
For safety, always leave the fixed-pressure PRV included with the vessel in place, never exceed the maximum rated working pressure of the vessel at any time during operation.