ʻO ke kāʻei hoʻomehana pipeline he maikaʻi ka hana wai, hiki ke ʻeha pololei ma ka ʻili o ka ʻāpana wela, hoʻonohonoho maʻalahi, palekana a hilinaʻi. ʻO ka hana nui o ke kāʻei hoʻomehana silicone he mea hoʻoheheʻe wai wela, thawing, hau a me nā hana ʻē aʻe. Loaʻa iā ia nā hiʻohiʻona o ke kūpaʻa wela kiʻekiʻe, ke kūpaʻa anuanu kiʻekiʻe a me ke kūpaʻa ʻelemakule.