ʻO ka pahu hoʻomalu noho hoʻokahi he pahu alakaʻi alakaʻi alakaʻi.Paʻa ke kino manuahi, a ʻo ke kahe ʻana he kahawai S-streamline.ʻO iahe uukupoho kaumaha,nuikahe, ākea hiki ke hoʻololi, kiʻekiʻe kahe ʻano pololei, a me ke kūpaʻa haʻalulu maikaʻi.Hiki ke hoʻolako ʻia ka valve hoʻoponopono me ka multi spring diaphragm actuator, me ka ikaika puka nui.He kūpono no ka hoʻomalu ʻana i nā wai a me nā media viscosity kiʻekiʻe me nā ʻokoʻa a me nā mahana.