Application of a Dip Coating to a Component of Mixed-Material Construction, Where Pacts in Noncorridible Material Must Remain Uncoated

摘要

An invention is described concerning the use of a dip-applied coating on a corrodible metal component for water-immersion applications, where the component incorporates non-corrodible parts which must remain uncoated. An example of such a component is a wedge-gate valve, of cast iron with stainless steel trim. Protection against the initiation of corrosive failure at coating discontinuities is provided.