Are cast iron cleanout plugs allowed in plumbing installations?

In plumbing installations, the use of cast iron cleanout plugs is not permitted because they can lead to several issues. Cast iron is a heavy material that is prone to corrosion and can crack under pressure or due to temperature changes. The plumbing codes prioritize materials that ensure longevity, durability, and ease of maintenance. Alternate materials like plastic or other non-corrosive options are recommended for cleanout plugs as they are lighter, resistant to corrosion, and provide better sealing capabilities. By choosing materials that can withstand plumbing conditions effectively, the integrity of the plumbing system is maintained, reducing the potential for leaks and failures. This adherence to modern plumbing standards is critical for ensuring safety and compliance within installations.