An apparatus for electrostatically spray-coating a workpiece with conductive paint which includes a color changeover valve mechanism for selectively supplying conductive paint, cleaning liquid and air. A flush valve mechanism is provided for selectively supplying the cleaning liquid and the air. A first...http://www.google.com.au/patents/US5288029?utm_source=gb-gplus-sharePatent US5288029 - Apparatus for electrostatically spray-coating workpiece with paint
