Te Whānuitanga o te Whānuitanga o ngā Takirere Kirihou

Ahakoa e kitea ana ngā takirere kirihou he hua motuhake i ētahi wā—he whiringa matua tēnei mā te hunga e hanga ana, e hoahoa ana rānei i ngā hua paipa kirihou mō ngā pūnaha ahumahi, me te hunga rānei e hiahia ana ki ngā taputapu tino ma—he whakaaro poto noa iho te whakaaro kāore i te maha ngā whakamahinga whānui o ēnei takirere. Inaa, he whānuitia ngā whakamahinga o ngā takirere kirihou i ēnei rā, nā te mea kei te piki haere ngā momo rauemi me ngā kaihoahoa pai e hiahia ana ki aua rauemi, ā, he maha atu anō ngā huarahi hei whakamahi i ēnei taputapu maha-whakamahinga.

NGĀ ĀHUATANGA O TE KIRIHIKI
He whānui ngā painga o ngā takirere kirihou—he ātete ki te waikura, ki te matū me te pakū; he maeneene ngā pakitara o roto; he māmā; he ngāwari te tāutanga; he roa te ora; me te iti o te utu mō te huringa ora. Nā ēnei painga kua whānuitia te whakaaetia o ngā takirere kirihou i roto i ngā tono arumoni me ngā tono ahumahi pēnei i te tohatoha wai, te maimoatanga wai para, te tukatuka whakarewa me te matū, te kai me te rongoā, ngā tipu hiko, ngā whare whakapai hinu me te maha atu.
Ka taea te hanga i ngā takirere kirihou mai i ngā rauemi rerekē e whakamahia ana i roto i ngā momo whirihoranga. Ko ngā takirere kirihou tino noa he mea hanga ki te polyvinyl chloride (PVC), te polyvinyl chloride kua whakakōkōhia ki te chlorine (CPVC), te polypropylene (PP), me te polyvinylidene fluoride (PVDF). Ko ngā takirere PVC me CPVC he mea hono noa ki ngā pūnaha paipa mā te whakamahi i ngā pito o te pūwero e whakakī ana i te whakarewa, i ngā pito miro me ngā pito whakarara rānei; engari, ko te PP me te PVDF me hono ngā wāhanga o te pūnaha paipa, mā te hangarau wera, te hangarau pūmau, te hangarau whakakotahi hiko rānei.

Ahakoa he haurua te kaha o te polypropylene i te PVC me te CPVC, ko tōna ātete matū tino maha ngā whakamahinga nā te mea kāore he whakarewa e mōhiotia ana. He pai te mahi a te PP i roto i ngā waikawa acetic me ngā hauwaiwai kukū, ā, he pai hoki mō ngā otinga ngawari o te nuinga o ngā waikawa, ngā kawakore, ngā tote me te maha o ngā matū waro.

Kei te wātea te PP hei rauemi whai tae, hei rauemi kore tae rānei (taiao). Ka tino pakaru te PP tūturu i te hihi ultraviolet (UV), engari ko ngā matū kei roto neke atu i te 2.5% te tae waro pango ka tino pumau te UV.

E whakamahia ana ngā pūnaha paipa PVDF i roto i ngā momo mahi ahumahi mai i te rongoā ki te keri maina nā te kaha o te PVDF, te pāmahana mahi me te ātete matū ki ngā tote, ngā waikawa kaha, ngā turanga waimeha me te maha o ngā whakarewa waro. Kāore i rite ki te PP, kāore te PVDF e pakaru i te rā; heoi, he mārama te kirihou ki te rā, ā, ka taea te whakaatu i te wai ki te hihi UV. Ahakoa he pai te hanganga taiao, kāore he tae o te PVDF mō ngā mahi o roto, he tino parakore, mā te tāpiri i tētahi tae pēnei i te whero kai-kai ka taea te whakaatu ki te rā me te kore he pānga kino ki te wai.