Field glossarySVB / SPVBSpill-resistant vacuum breaker; a PVB built not to spill, so it can be installed indoors (ASSE 1056)Used across 2 Anvilfield field guides, most in Plumbing. Where this shows upPlumbingBackflow assembly typesPlumbingBackflow failed test repair guide Related termsPVBAir gapCross-connectionDC / DCVADegree of hazardpsid Back to the full field glossary