Valavu yowunikira mpando wokhazikikaIli ndi thupi la valavu, bonnet, ndi diski yolumikizidwa ku hinge. Vavu iyi ndi ya mtundu wa swing check pogwiritsa ntchito mpando wokhotakhota komanso diski yolimba komanso yokhazikika. Imatha kugwira madzi osiyanasiyana kuphatikiza kuyenda komwe kuli ndi zinthu zolimba zoyimitsidwa. Disikiyi imasuntha kuchoka pa mpando wa valavu kuti ilole kuyenda kupita kutsogolo, ndikubwerera ku mpando wa valavu ikayimitsidwa, kuti ipewe kuyenda kumbuyo. Imalola kuyenda kwathunthu, kosatsekedwa ndipo imatseka yokha pamene kuthamanga kukuchepa. Ma valavu awa amatsekedwa kwathunthu pamene kuyenda kufika pa zero ndikuletsa kuyenda kumbuyo. Kugwedezeka ndi kutsika kwa kuthamanga mkati mwa valavu ndizochepa kwambiri. Vavu imatsegulidwa ndi kuyenda kwa madzi mbali imodzi ndikutseka yokha kuti iteteze kuyenda kumbuyo.

TheValavu yowunikira mpando wokhazikikaimagwiritsidwa ntchito makamaka pakupereka madzi ndi ngalande, ndi mafakitale ena a paipi kuti apewe kusinthasintha kwapakati. Chifukwa mphete yotsekera ya chinthucho idapangidwa motsatira kapangidwe kopendekera, nthawi yotseka ndi yochepa, ndipo kuthamanga kwa nyundo yamadzi kumatha kuchepetsedwa.