What is the maximum safe working pressure to be used with acetylene?

The maximum safe working pressure for acetylene is 15 psi. This limit is established due to the properties of acetylene itself, which is unstable at pressures greater than this value. Acetylene can become hazardous under pressure, and exceeding this limit increases the risk of decomposition, potentially leading to dangerous explosions. Therefore, when working with acetylene in oxy-acetylene welding or cutting, it is crucial to adhere to this maximum pressure to ensure safety and to effectively manage the integrity of the equipment and the work environment. This recommended pressure also aligns with industry standards and safety regulations designed to mitigate risks associated with flammable gases.

Understanding the safe working pressures for gases like acetylene is critical for all welding practices, as it directly impacts both safety protocols and the efficiency of the welding process.