According to the ASME Code, what is the maximum allowable working pressure for materials in blowdown lines?

The maximum allowable working pressure for materials in blowdown lines, as stated in the ASME Code, is indeed 125 psi. Blowdown lines are critical in steam systems, as they help in the removal of impurities and excess water from the boiler, ensuring efficient operation and safety. The ASME Code sets specific guidelines to ensure that all components, including those in the blowdown system, can safely handle the pressures and conditions they will face during operation.

The value of 125 psi is considered safe for this application, balancing the requirement for robust pressure handling while mitigating the risk of pressure-related failures. This standard ensures that the materials used in blowdown lines can withstand the pressures experienced during blowdown operations without compromising safety or performance.