Kuponya chitsulovalavu yozungulira

Chipata cha flap ndi valavu ya njira imodzi yomwe imayikidwa pakhomo la drainpipe kuti madzi azitha kugwira ntchito ndi zotayira komanso ntchito zachimbudzi zimagwira ntchito. Amagwiritsidwa ntchito kusefukira kapena kuyang'ana sing'anga, ndipo amathanso kugwiritsidwa ntchito pazovundikira shaft zosiyanasiyana. Malingana ndi mawonekedwe, chitseko chozungulira ndi chitseko chogwedeza cha square chimamangidwa. Khomo lakuthwanima limapangidwa makamaka ndi thupi la valavu, chivundikiro cha ma valve ndi chigawo cha hinge. Mphamvu yake yotsegula ndi yotseka imachokera ku kuthamanga kwa madzi ndipo sichifunikira ntchito yamanja. Kuthamanga kwa madzi pa chitseko cha chitseko ndi chachikulu kuposa chomwe chili kunja kwa chitseko, ndipo chimatseguka. Apo ayi, imatseka ndikufikira kusefukira ndikusiya zotsatira.