Hoʻomalu ʻia ka valve diaphragm welded meaʻai e ka mea hoʻokele a i ʻole e hana lima ʻia e ka lima.ʻEkolu mau kūlana o ka mea hoʻokele: ʻano pani maʻamau, ʻano wehe maʻamau a me ke ʻano kinoea.Loaʻa iā ia nā pōmaikaʻi o ka hoʻolālā maʻalahi, nā hiʻohiʻona nani, ka wehe koke ʻana a me ka hui ʻana, ka hana maʻalahi, ka pale ʻana o ka wai liʻiliʻi, ka palekana a me ka hilinaʻi hoʻohana, a me nā mea ʻē aʻe. , metallurgy, hoʻomehana wai, meaʻai, lāʻau lapaʻau a me nā ʻoihana ʻē aʻe.