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So my CO2 regulator is not regulating. If I open the tank valve the pressure will keep rising rapidly (like 20 PSI per second) until the relief value blows. If I have the CO2 line connected (or depress the fitting with my finger) it will release gas. The strange thing is that this happens even though the pressure-setting dial is set to fully closed. So it seems like the internals of the pressure-setting part are stuck fully open, independent of the dial itself.

Has this happened to you? Is it fixable?

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