ʻO ka pōkole, ʻo ka valve butterfly he haʻahaʻa turn rotational motion valve.E like me nā valve ʻē aʻe, hoʻohana ʻia lākou e hoʻomaka, hoʻōki, a hoʻoponopono i ke kahe.Ua puni kēia ʻano valve mai ka makahiki 1930 a he nui nā ʻano o nā noi i ka hoʻonohonoho ʻoihana.B...
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