Condensate piping shall be ______.

Schedule 80 carbon steel is the appropriate choice for condensate piping due to its increased pressure ratings and wall thickness compared to Schedule 40. Condensate systems often operate at higher temperatures and pressures, particularly in HVAC applications, where durability and safety are critical.

Carbon steel provides robust resistance to corrosion and mechanical stress, which enhances the reliability of the condensate system. The thicker walls of Schedule 80 piping reduce the risk of leaks and failures, which is particularly important in systems handling hot water or steam condensate. In contrast, while Schedule 40 may be sufficient for certain applications, it does not offer the same level of pressure handling and structural integrity, making it less suitable for condensate systems operating under higher loads.

While PVC options might be non-corrosive and lightweight, they typically cannot endure the higher temperatures often associated with condensate systems, making them an unreliable choice. Therefore, selecting Schedule 80 carbon steel ensures a safe, reliable, and long-lasting condensate piping system.