Interface control document. An interface control document (ICD) in systems engineering and software engineering, provides a record of all interface information (such as drawings, diagrams, tables, and textual information) generated for a project.
How well do you know your pipe flanges? Remember that flanges come in a variety of shapes and sizes to suit different applications. A flange is usually in the shape of a disc and is used to connect two tubes together or to connect a pipe to a valve, tee, choke or other component. Providing support and strength, two flanges are typically attached to pipe ends with a gasket in between.
Teflon tape is a delicate white strip of filmy material that's used to wrap plumbing pipe ends before screwing on the fittings that will attach to the pipe. The tape coats the threads of the pipe and helps form a seal with the fitting to prevent leaks.