Abstract: An electrostatic sprayer installation for powder coating product comprises a plurality of powder sprayers and a plurality of powder storage tanks each adapted to contain powder of a specific color. Connecting ends of a plurality of suction tubes for each storage tank are disposed side by side on a connecting socket of the storage tank. A connecting block is provided with powder suction devices each establishing communication between a hose connected to a sprayer or a group of sprayers and one of the suction tubes. The connecting block is removable so that it can be mounted on the connecting socket of a selected storage tank. An air blower station has a connecting socket analogous to that of a storage tank and comprises air ejector orifices disposed to be connected to the suction devices.

Abstract: A coating product sprayer installation enabling a rapid change of coating product. The installation includes two parallel distribution branches each containing a piston or membrane type intermediate storage tank defining an actuation chamber actuated by a liquid, the branches being connected by means of valves between a coating product change unit and at least one coating product sprayer. The apparatus can be used advantageously for electrostatic spraying of conductive coating products.

Abstract: An installation for spraying a coating product in liquid form, as in the automobile industry, comprises at least one circuit and, in that circuit, a pump, at least one sprayer, and a flexible conduit connecting an outlet of the pump to the sprayer. The flowrate of liquid in the conduit is controlled by a servo-system which controls the pump. The pump is preferably a gear pump.