Illinois Plumbing Code Practice

An extracted mechanical joint is indeed permitted in a water supply system under the Illinois Plumbing Code, primarily because such joints are designed to facilitate ease of assembly and disassembly, which is crucial for maintenance and repair. These joints maintain the integrity of the water supply while allowing for flexibility and adaptation to various installation conditions.

In the context of water supply systems, mechanical joints can be beneficial in ensuring a watertight seal while meeting the demands of system pressures and flow requirements. They are often utilized in areas where traditional methods may be cumbersome or impractical, providing a reliable alternative that fulfills both performance and regulatory standards.

This allowance reflects the Code's emphasis on practical solutions that enhance functionality and compliance without compromising safety and reliability.