The latest technology is push-to-connect aluminum piping systems for compressed air lines (such as Parker Transair). Aluminum is light-weight, making it easy to work with compared to other piping. Also, it is highly recommended for clean air applications. It is non-corrosive and remains leak-free unlike black pipe systems. Considering the high cost of producing compressed air, reducing leaks in your system by using aluminum piping may be the best option for you.