BZ ndi BZH ndi single-siteji, centrifugal ndi self-priming mapampu, amene ntchito kunyamula madzi oyera, madzi a m'nyanja ndi zakumwa zina ndi ofanana thupi ndi mankhwala katundu monga madzi oyera, pazipita ntchito sing'anga kutentha si upambana 80 ℃.Iwo akhoza ankagwiritsa ntchito popopera nsanja madzi, ulimi wothirira, ngalande ndi kuwaza ulimi wothirira minda, ndi mafakitale ndi m'nyumba madzi m'mizinda ndi kumidzi.
BZ ndi mpope wamadzi wamtundu watsopano, womwe umatha kutulutsa mpweya mupaipi yolowera kuti upope madzi popanda kusokoneza madzi poyambira.Pamene ntchito ndi zodziwikiratu madzi mlingo kulamulira bokosi, adzakhala ndi .function ya madzi basi ndi ngalande.