Abstract: An electrostatic spray coating apparatus including means for mechanically atomizing coating materials and means for electrostatically charging the atomized material for deposit onto articles, is characterized by an improved material-charging means and an improved means for sealing material passages from the remainder of the apparatus in a manner which contributes to efficient and effective charging of the material, yet minimizes the capacitance of the material charging means, whereby the energy capable of being stored by the charging means is significantly reduced. The spray coating apparatus also includes means ensuring safety of the apparatus, and enhanced overall construction of the apparatus for greater service life, more reliable and safe operation, and economy.