The PVD process, (Physical Vapor Deposition), vaporizes a solid metal to a plasma of atoms or molecules; the vapor is then deposited in a vacuum chamber as a high-performance coating. Used in the aerospace and biomedical fields, PVD is the hardest and most corrosion-resistant coating to strengthen and protect your Tap for a lifetime. It is more environmentally friendly than traditional coating processes such as electroplating and powder coating.