Hoʻolauna ʻO ka API 599, i paʻi ʻia e ka American Petroleum Institute (API), he kūlana i ʻike nui ʻia no ka hoʻolālā, kūkulu ʻana, hoʻāʻo ʻana, a me nā koi hana o nā valves plug, ʻoi aku hoʻi no nā ʻoihana aila, kinoea, a me ka petrochemical. Hōʻoia kēia kūlana i ka hilinaʻi, ka palekana, a me ka pono hana o nā valves plug i nā noi koʻikoʻi like ʻole, e like me ka kaohi ʻana i ke kahe o nā wai a me nā kinoea ma lalo o nā kaomi kiʻekiʻe a me nā mahana. He mea nui nā valves plug i nā kaʻina hana he nui ma muli o ko lākou hiki ke hāʻawi i kahi sila paʻa, ka hana maʻalahi, a me ka hoʻoponopono kahe maikaʻi.