Pneumatic air connector Used for connecting air lines with various types of pneumatic devices. By pushing the pipe into the air joint. To control the pressure and direction of air flow. It is a device that helps connect air lines or air pipes. There are different designs according to connection characteristics, pressure and usage to be compatible with machines in industrial systems. Nowadays, air couplings are safer to use. Air couplings are available in plastic, metal, steel, and stainless steel according to their intended use in the industry.