Maximum regulator pressure on an air acetylene tank should not exceed which PSIG?

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Multiple Choice

Maximum regulator pressure on an air acetylene tank should not exceed which PSIG?

Explanation:
Acetylene must be delivered at very low pressures for safety because it becomes unstable under higher pressures and can decompose violently. That’s why regulators for acetylene are designed to keep the outlet pressure around a safe maximum, roughly 14–15 psi. Using a pressure in this range minimizes the risk of dangerous decomposition and ensures the flame can be controlled predictably when mixed with oxygen. The lower ranges are simply below the typical upper limit, while the higher range exceeds what is considered safe, so 14–15 psi is the best choice.

Acetylene must be delivered at very low pressures for safety because it becomes unstable under higher pressures and can decompose violently. That’s why regulators for acetylene are designed to keep the outlet pressure around a safe maximum, roughly 14–15 psi. Using a pressure in this range minimizes the risk of dangerous decomposition and ensures the flame can be controlled predictably when mixed with oxygen. The lower ranges are simply below the typical upper limit, while the higher range exceeds what is considered safe, so 14–15 psi is the best choice.

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