Insimbiivalvu yokugoqa eyindilinga

Isango eliyi-flap liyi-valve enendlela eyodwa efakwe endaweni yokukhipha amanzi epayipini ukuze kuhlinzekwe amanzi kanye nemisebenzi yokukhipha amanzi kanye nemisebenzi yokuhlanza indle. Lisetshenziselwa ukugcwala noma ukuhlola indawo, futhi lingasetshenziswa nasezimbozweni ezahlukene zeshaft. Ngokwesimo, kwakhiwa umnyango oyindilinga kanye nomnyango wokupeta oyisikwele. Umnyango we-flap wakhiwe kakhulu ngomzimba we-valve, isembozo se-valve kanye nengxenye ye-hinge. Amandla awo okuvula nokuvala avela ekucindezelweni kwamanzi futhi awadingi ukusebenza ngesandla. Umfutho wamanzi emnyango we-flap mkhulu kunalowo ohlangothini lwangaphandle lomnyango we-flap, futhi uyavuleka. Ngaphandle kwalokho, uyavala futhi ufinyelele umphumela wokugcwala nokuma.