Abstract: Disclosed herein is a method of paint application. This method has the following advantageous effects. More specifically, when different paint is used, desired paint is alternately supplied to a first paint feeder and a second paint feeder from a paint feed source thereby to enable efficient painting of a workpiece by a spray gun. On the other hand, when the same paint is used, the paint is supplied only to the first paint feeder without using the second paint feeder, thereby making it possible to reduce wastefully-discharged paint and to efficiently carry out any cleaning work.

Abstract: Disclosed herein is a structure for preventing current from leaking out of devices such as a valve, an intermediate reservoir, etc., which are employed in an electrostatic spray coating apparatus for applying a desired voltage to electrically conductive paint so as to electrostatically spray-coat a workpiece therewith. The current-leakage prevention structure basically comprises any one of the devices each made of an electrically-conductive material, a container made of an insulating material, which accommodates the device therein and has a paint passage defined therein capable of communicating with the device, and a cover for externally covering the container. A creepage distance defined by the container and the cover is set to reach a desired creepage length or more capable of preventing current leakage. It is therefore possible to reliably prevent current from leaking even when a high voltage is applied to the devices.

Abstract: A method for the long-distance transport of a liquid of methanol or a solution of methanol and at least one organic compound other than methanol, under pressure, through a pipeline installation in which the portions of the pipeline installation that contact said liquid consist essentially of carbon steel and/or low alloy steel, the sum of whose metallic components other than Fe is up to 5 wt. %, in which the water content of said liquid is limited to (a) the range of 0 to 35 wt. % if the content of the formate radical in said liquid is up to 0.05 wt. %, (b) the range of 0.25 to 35 wt. % if the content of the formate radical in said liquid is in the range of 0.05 to 2 wt. % and (c) the range of 0 to 35 wt. % if the content of the formate radical in said liquid is in the range of 2 to 3 wt. %, so that said liquid is transported under pressure while the volume ratio of the formate radical to the water content is kept at a ratio that does not permit the presence of more than 3 wt.