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304 kuhiliʻole kila duplex kila kiʻekiʻe puʻe kila flange poepoe valve, PN63 kiʻekiʻe wela a me ka sulfur kū kū'ē, e like me ka 'āina a meʻAmelika kūlana.

    ʻO ke kila kila duplex kiʻekiʻe i hoʻopaʻa ʻia i ke kila flange ball valve he kiʻekiʻe kiʻekiʻe me ke kūpaʻa kiʻekiʻe kiʻekiʻe maikaʻi loa, pale ʻana i ka sulfur, a me ka hoʻokō ʻana i nā kūlana aupuni a me ʻAmelika. Hoʻohana nui ʻia ia i nā ʻoihana e like me ke kemika, ka ʻaila, a me ke kinoea maoli e hoʻomalu i ka kahe wai a me ke kaomi. Hana ʻia kēia pāpaʻi pōleʻa me ke kila kila duplex steel, nona ka ikaika kiʻekiʻe, ka pale ʻana i ka corrosion, a me ke kūpaʻa ʻana. Ua hoʻomaʻamaʻa kūikawā ʻia kona ʻili sealing e hōʻoia i ka hopena sealing maikaʻi a pale i ka leakage. I kēia manawa, loaʻa i ka valve ball ka maikaʻi o ka hoʻolālā maʻalahi, hoʻonohonoho maʻalahi, a me ka mālama maʻalahi. Papa hoʻohālikelike i ka nui o ke kŘkohu: |Kōkohu | anawaena nominal (DN) | kaomi hana (MPa) | ka palena wela kūpono (℃) | ʻano pili| |-- | -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --- --| |DQ41F | 15-150 | 1.6 | -29-300 | flange| |DQ341F | 25-300 | 2.5 | -29-300 | flange| |DQ61F | 40-400 | 4.0 | -29-300 | flange| |DQ941F | 50-600 | 6.4 | -29-300 | flange| |DQ641F | 80-900 | 10.0 | -29-300 | flange| ʻO nā ana hoʻohālike ma luna nei no ka kuhikuhi wale nō, a pono e hoʻoholo ʻia ke koho kikoʻī ma muli o nā kūlana hana maoli a me nā koi.