All pipes and covered drains shall be coloured with a colour indicating the purposes for which they are used, as follows:If intended for the conveyance of wash green; if for the conveyance of spirit, red; if for the conveyance of water or steam, white; if for the conveyance of spent was, yellow; if for the conveyance of gas (or electric wires) used for the purposes of illumination or power, black; if for the conveyance of molasses, blue.Locks
