I roto i te pūnaha parai hau, ko te hau kōpeke he mea mahi hei pupuri i te pēhanga mahi pumau, hei whakarite hoki kia ma te hau mō te mahi noa o te takirere i roto i te pūnaha. Ko ngā wāhanga e rua, arā, ko te whakamaroke tātari ngota me te kaiwhakahaere pēhanga hau, kua hangaia hei whakarato i te hau kōpeke ma, maroke hoki mō te pūnaha parai, hei pupuri hoki i te pēhanga o te pūnaha ki te awhe noa (i te nuinga o te wā i te 8~10bar).
I roto i te pūnaha parai waka, ka tukuna e te pēhi hau he hau kei roto ngā paru pēnei i te mamaoa wai, ki te kore e tukatukahia, ka huri pea hei wai wai, ka honoa ki ētahi atu paru hei whakapūpū i te waikura, tae noa ki te whakatio i te trachea i te pāmahana tino nui, ka ngaro te whai huatanga o te takirere.
Ka whakamahia te whakamaroke hau waka hei tango i te wai, i ngā pata hinu me ētahi atu poke i roto i te hau kōpeke, ka tāutahia i muri i te kōpeke hau, i mua i te takirere tiaki porowhita-whā. Ā, ka whakamahia hoki hei whakamatao, hei tātari me te whakamaroke i te hau kōpeke, ka taea hoki te tango i te mamaoa wai, te hinu, te puehu me ētahi atu poke, e whakarato ana i te hau maroke me te ma mō te pūnaha aukati.
He whakamaroke hau whakaora te whakamaroke hau waka, ā, he tātari ngota hei whakamaroke. Ko te tātari ngota JZ-404B he hua whakamaroke hangai, he kaha te pānga mimiti ki ngā ngota wai. Ko tōna wāhanga matua he hanganga moroiti o te matū konumohe silicate whakarewa kawakore me te maha o ngā kōhao me ngā kōhao ōrite, ātaahua hoki. Ka mimitihia ngā ngota wai, ētahi atu ngota rānei ki te mata o roto mā roto i te kōhao, ā, ko te mahi he tātari i ngā ngota. He nui te ōwehenga taumaha mimiti o te tātari ngota, ā, ka mau tonu ngā ngota wai i ngā pāmahana teitei o te 230 ℃.
Ka waikura te paipa i te makuku o te pūnaha, ka pā ki te pānga aukati, ā, ka taea hoki te pakaru o te pūnaha aukati. Nō reira, me aro nui ki te tukunga wai i roto i te pūnaha me te whakakapinga auau o te whakamaroke tātari ngota.