# ISO 23551-9:2015 — Withdrawn and superseded ISO standards For ISO 23551-9:2015, item title is Safety and control devices for gas burners and gas-burning appliances — Particular requirements — Part 9: Mechanical gas thermostats; status code is 9599; successor is ISO 23551-9:2022; withdrawn / published date is 2015-08-14, recorded from its source on 2026-08-05. - **Identifier:** ISO 23551-9:2015 _(verified: appears in the quote below)_ - **Item title:** Safety and control devices for gas burners and gas-burning appliances — Particular requirements — Part 9: Mechanical gas thermostats _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 23551-9:2022 - **Withdrawn / published date:** 2015-08-14 _(verified: appears in the quote below)_ ## What the source says > 64957,IS,,ISO 23551-9:2015,Safety and control devices for gas burners and gas-burning appliances — Particular requirements — Part 9: Mechanical gas thermostats,Dispositifs de commande et de sécurité pour brûleurs à fioul et pour appareils à fioul - Exigences particulières — Partie 9: Thermostats mécaniques,2015-08-14,1,['27.060.20'],ISO/TC 161,9599,,[78036],['en'],26,"

ISO 23551-9:2015 specifies safety, constructional, and performance requirements and testing of mechanical gas thermostat for gas burners, gas appliances, and similar use hereafter referred to as 'thermostats'.

ISO 23551-9:2015 covers type testing only.

ISO 23551-9:2015 applies to mechanical gas thermostats of nom ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).