ʻO kekahi mau valve maʻamau i hoʻohana ʻia i loko o nā pipeline ʻoihana, ʻoi aku ka nui o ka hoʻohana ʻana i nā ʻāpana pōpō, inā he pipeline maʻamau maʻamau no ka wai, ka aila a me ke kinoea a i ʻole nā kūlana hana koʻikoʻi e loaʻa ana nā mea paʻakikī kiʻekiʻe, inā he haʻahaʻa haʻahaʻa, wela kiʻekiʻe, a i ʻole ka corrosive environment. , ʻoe ...
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