What is the most common compression fitting?
The most common type of compression fitting is the compression nut, which is threaded onto a pipe and tightened using a wrench. These nuts come in several sizes, from 1/2 inch to 3 inches in diameter. A compression nut is typically used to connect two pieces of piping. For example, if you want to install a new sink, you'll first cut off the old one and then thread the compression nut onto the end of the pipe leading into the sink. Next, you'll attach the sink to the pipe using a flange. Finally, you'll tighten the compression nut until it's snug against the wall.