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Understanding Proper Propane Tank Pressure!
Posted
on 7th Jun 2019
How much pressure is in my propane tank?
- According to the national standards publication NFPA58, a propane tank with 20 pounds (5 Gal) of gas at 70°F would have a pressure of 145 psi; at 90°F, pressure would increase to 180 psi; at 105°F, pressure continues to rise to 235 psi, and at 130°F, pressures of 315 psi would be reached.
- Why is this important to know? Excessive pressures can cause the tank's safety relief valve to discharge.
- What conditions contribute to excessive temperatures? Answer: Direct sun, dark paint colors, external heat sources, etc.
- Pressure is not a measurement of volume. A pressure gauge only informs you of the internal tank pressure. A liquid level gauge is required to measure percentage of remaining volume.
