Can I use plastic fittings to build a compressed air piping system?
No. Plastic fittings should not be used to build a compressed air piping system unless they are specifically designed for such service. There are a few manufacturers that produce fittings from a special grade of ABS material that are designed for use in compressed air systems. Plastic pipe and fittings designed for compressed air systems are clearly marked and identified for this type of application. Do not attempt to use common black ABS DWV pipe and fittings for they are not designed for this type of application.
