The most common problem encountered with gas standards is the absence of a pressure reading at the regulator. To check your regulator, remove it from the cylinder, and connect it to a cylinder that you are sure has pressure. If the regulator registers a reading on the “good” cylinder, the problem is likely that the cylinder in question is empty. If the regulator does not register a reading on the “good” cylinder, then the problem is the regulator and it must be repaired or replaced.
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