Rāhui Kōpaki – he taputapu whai hua mo te tiaki kupuhipa o ngā kōnae. Hanga te pūmanawa i te kōnae, me ngā kōpaki rawa e kitea, te whakarite i te rokiroki haumaru o te mahi muna, me te mōhiohio whaiaro, tuhinga, whakaahua, me te ataata. Ārai Kōpaki Rāhui te tahae raraunga i te pūmanawa, leakage raraunga o ngā mōhiohio whaiaro, me te matatapu. He te pūmanawa e rave rahi taumata o te tiaki me te tiaki i te mōhiohio mai i te mukunga kōpeka me te mate huaketo. He atanga pūmanawa, me te ngāwari ki te whakamahi Kōpaki Parengia.