Pipe, valve, conduit, and wire markers and labels identify pipes, valves, and electrical wiring and conduit throughout facilities. Pipe markers identify pipe contents and directional flow. Valve tags are used to identify valves and the content flowing through the valve. Utility marker posts are mounted in-ground and mark the location of underground utlility lines. Underground utility marking tape is buried in-ground, above underground utility lines to assist workers in locating the lines to prevent accidents. Conduit and voltage markers alert people of electrical dangers that could cause shock or serious injury.