Pampu yamadzi yonyamula madzi ndi chipangizo chomwe chimagwiritsidwa ntchito kuthandizira kumapeto kwa shaft yopangira madzi. Kumangirira motetezeka kuzungulira shaft ya impeller ndi int molimba

o nyumba ya pampu yamadzi, chotengera cha pampu yamadzi chapangidwa kuti chizitha kupirira kupsinjika ndi katundu woyikidwa pa shaft ya pampu yamadzi ndi makina oyendetsa lamba wa injini. Nthawi zambiri, pampu yamadzi yonyamula madzi imayimbidwa mlandu wochita ntchito ziwiri ngati chotengera cha shaft yozungulira komanso chisindikizo kuti choziziritsa kuzizirira chitha kutuluka mnyumba ya mpope wamadzi.