Butterfly valves are an integral part of keeping an aircraft carrier’s firemain system operating smoothly. But they’ve been modified and improved greatly from the early days of their use.
In the complicated but vital industry of drawing oil and gas out of the earth and getting it to the surface, people often get confused about the difference between a Christmas tree assembly and a wellhead. Although the terms are used interchangeably, they are not the same piece of equipment. Each has valves and related equipment that help it control and guide the flow of this precious resource.
