# ISO 7841:1988 — Withdrawn and superseded ISO standards For ISO 7841:1988, item title is Automatic steam traps — Determination of steam loss — Test methods; status code is 9599; successor is ISO 5117:2023; withdrawn / published date is 1988-12-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 7841:1988 _(verified: appears in the quote below)_ - **Item title:** Automatic steam traps — Determination of steam loss — Test methods _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 5117:2023 - **Withdrawn / published date:** 1988-12-01 _(verified: appears in the quote below)_ ## What the source says > 14762,IS,,ISO 7841:1988,Automatic steam traps — Determination of steam loss — Test methods,Purgeurs automatiques de vapeur d'eau — Détermination de la perte de vapeur — Méthodes d'essai,1988-12-01,1,['23.060.01'],ISO/TC 153,9599,,[81365],"['en','fr']",11,"

Specifies two test methods for steam traps. The object of these tests is to determine the amount of live steam, if any, that is lost through the steam trap. There is no measurement of the total heat energy lost by the trap. Such total heat loss would include radiation and convection components which can be established separately. Figure 1 shows the test arrangement for test method A, and figure 2 shows the test arrangement for test metho ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).