Resources / By mehedimaruf NEWS & RESOURCES SEPTEMBER 08, 2021 API Monograms API has a monogram program: API does monograms for API 600, API 602, and API 594.As of February 2019, API does NOT yet have a monogram for API 623 (globe valves).A list of manufacturing facilities that have the right to apply API monograms can be obtainedfrom: https://mycerts.api.org/Search/CompositeSearch As of Feb 2019, the following have valid API Monograms:Newco 27 – YC: API 600, API 594Newco 47 – DC: API 602Newco 22 – HLC: API 600Plant 21 – L&T: API 600, API 594 Date Composed: 2/14/2019Revision Letter: NONEReason for Release: Original SpecificationPrepared By: D. Romphf