Kufotokozera Kwazinthu Mpira wa valavu ya mpira woyandama umathandizidwa momasuka pa mphete yosindikiza. Pansi pa mphamvu yamadzimadzi, imakhala yolumikizidwa kwambiri ndi mphete yosindikizira yakumtunda kuti ipangitse chisindikizo cham'mphepete mwa mtsinje wokhazikika. Mpira wa valve wokhazikika wokhala ndi shaft yozungulira mmwamba ndi pansi, umakhazikika mu mpirawo, chifukwa chake, mpirawo umakhazikika, koma mphete yosindikiza ikuyandama, mphete yosindikiza yokhala ndi masika ndi kuthamanga kwamadzimadzi kuti...
Mawonekedwe a mankhwala A valve cheke ndi valve "yodziwikiratu" yomwe imatsegulidwa kuti ikhale yotsika pansi ndikutsekedwa kuti iwononge. zimasiyanasiyana ndi mtundu wa makina opangira ma valve. Mitundu yodziwika bwino ya ma check valves ndi swing, lift (pulagi ndi mpira), butterfly, cheke, ndi tilting disc.Zogulitsa zimagwiritsidwa ntchito kwambiri mu petroleum, mankhwala, mankhwala, chemistry...