0.5′ Gi cap

a specific type of cap used in plumbing applications, typically made of galvanized iron (GI). Let’s break down what each part of the term means:

1. 0.5″: This indicates the nominal size of the cap, which is 0.75 inches in diameter. This measurement corresponds to the size of the pipe or fitting it’s intended to cap.
2. GI: This stands for “Galvanized Iron,” indicating the material the cap is made from. Galvanized iron is iron or steel that has been coated with a layer of zinc to protect it from corrosion, making it suitable for use in plumbing applications.
3. Cap: A cap is a type of fitting used to seal the end of a pipe or fitting. It has a flat surface that covers the end of the pipe, preventing the flow of water or other fluids. Caps are commonly used to close off the ends of pipes that are not in use or to terminate a pipe run.