What is the difference between a schedule 40 and a schedule 80 pipe?

Schedule 80 pipe is designed with thicker walls compared to Schedule 40 pipe, which significantly enhances its ability to withstand higher pressures. This characteristic makes Schedule 80 the preferred choice for applications requiring greater strength and durability, such as in industrial settings or where the system may be exposed to high-pressure conditions. The increased wall thickness provides added safety and reduces the likelihood of failure under stress.

The structural integrity afforded by the thicker walls of Schedule 80 pipe is critical in maintaining the performance of plumbing systems, especially in scenarios involving pressurized fluids. This difference is essential for plumbers and engineers to understand, as it directly influences material selection based on the specific requirements of a project.