What grade of brass should be used for tail pieces in commercial plumbing installations?

The use of brass in plumbing applications, particularly for tail pieces, is governed by specific industry standards due to its corrosion resistance, strength, and ease of fabrication. The appropriate grade of brass for tail pieces in commercial plumbing installations is commonly recognized as grade 17.

Grade 17 brass, also known as Copper-Zinc alloy, provides a good balance between malleability and strength, making it suitable for the mechanical demands typically encountered in plumbing systems. It has superior resistance to dezincification, a form of corrosion that can compromise the integrity of plumbing systems, especially in environments where water quality fluctuates.

In contrast, the other grades listed either do not possess the same level of performance characteristics needed for plumbing applications or are less commonly specified in industry guidelines. For instance, grades 18 and 19 brass may not offer the same balance of properties or may be more suited for different applications such as decorative uses rather than structural plumbing components. Thus, selecting grade 17 for tail pieces aligns with best practices in ensuring longevity and reliability in plumbing installations.