Paipa kowakawaka-taiepa-rua: he momo putorino hou me te pakitara o waho me te pakitara maeneene o roto.Ko te nuinga o te waa e whakamahia ana mo te tuku wai nui, te tuku wai, te whakaheke, te whakaheke parakaingaki, te ngongo, te hau o raro, te hau maina, te irrigation whenua paamu me etahi atu me te pehanga mahi i raro i te 0.6MPa.Ko te tae o te pakitara o roto o te pupuhi pakitara-rua he puru me te pango te nuinga o te waa, a ka whakamahia e etahi rama he kowhai.