PIPE MARKING. The Contractor shall mark all piping in the vessel to indicate its service and usage. Label plates shall be attached to all valves, manifolds, and pumps to indicate the system and function of the equipment. For valves, the label plates shall be installed over the stem of the hand wheel, where possible, and shall indicate the direction of opening (or closing). The nameplate shall be 14-gauge (or heavier) brass with ¼-inch high engraved letters filled with black paint.
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