Hoʻohana mau ʻia ka valve butterfly hōʻailona ahi i nā ʻano ʻaila, kemika, lāʻau lapaʻau, hydropower, drainage a me nā mea ʻē aʻe.He ākea loa ka laulā noi.ʻO ka mea nui loa, hiki ke hoʻohana ʻia i loko o ke kinoea corrosive, wai a i ʻole semi wai.Nui nā hale kiʻekiʻe iā mākou ...
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