When the knob is all the way off the regulator(unscrewed all the way I mean), there's no flow, right?
If so, it means the spring inside your gauge is bent, and the L.P. gauge needs to be replaced.
This happens if you open the co2 cylinder while the knob is turned to high, it can release more pressure into the gauge than the gauge can measure, resulting in a bent spring. Bent springs can't be fixed without a way to calibrate them. Just replace the gauge.
If so, it means the spring inside your gauge is bent, and the L.P. gauge needs to be replaced.
This happens if you open the co2 cylinder while the knob is turned to high, it can release more pressure into the gauge than the gauge can measure, resulting in a bent spring. Bent springs can't be fixed without a way to calibrate them. Just replace the gauge.
