These components represent a specific type of connection utilized in pneumatic braking systems, especially within heavy vehicles such as trucks and buses. These connectors mechanically join sections of tubing, typically nylon or copper, without requiring welding, soldering, or threading. The fitting design features a nut, a sleeve (or ferrule), and a body. Tightening the nut compresses the sleeve onto the tube, creating a leak-proof seal. An example includes connecting the air lines running from the compressor to the reservoirs in a tractor-trailer.
Reliability and ease of installation are paramount in safety-critical systems. The described method of connection offers significant advantages in these respects. Compared to alternative methods, the system provides relatively simple assembly, reducing installation time and potential for error. Its inherent design allows for straightforward maintenance and repair in the field. Historically, these fittings have contributed to the increased safety and efficiency of heavy vehicle braking systems, leading to their widespread adoption.
