Illinois Plumbing Code Practice 2025 – 400 Free Practice Questions to Pass the Exam

The correct maximum temperature for steam exhaust, blowoff, or drip pipes discharging into the building drainage system is 180 degrees Fahrenheit according to the Illinois Plumbing Code. This specification is crucial for several reasons.

Firstly, maintaining a temperature limit on discharged steam and other similar substances prevents potential damage to the drainage system. Extremely high temperatures can adversely affect the materials used in plumbing infrastructure, including pipes and fittings, potentially leading to structural failures or leaks.

Secondly, controlling the temperature of discharge helps to ensure safety within the building. High-temperature discharges could pose a risk to maintenance personnel or anyone using facilities near the discharge point, increasing the potential for burns or other injuries.

Finally, the 180-degree threshold is designed to align with best practices in plumbing regulation, reflecting a balance between operational efficiency and the need to protect the plumbing system and public health. Other temperature limits, though lower, would not adequately safeguard against the risks associated with high-temperature discharges.