Jula i-ayiniivalvu ejikelezayo yeflap

Isango eliyi-flap yivalvu enecala elinye efakwe kwindawo yokuphuma kombhobho wokuhambisa amanzi kunye nemisebenzi yokukhupha amanzi kunye nemisebenzi yokucoca amdaka. Isetyenziselwa ukugcwala okanye ukujonga i-medium, kwaye ingasetyenziselwa nezigqubuthelo ezahlukeneyo zeshaft. Ngokwemilo, ucango olujikelezileyo kunye nocango oluyi-square patting lwakhiwe. Ucango oluyi-flap lwenziwe kakhulu ngumzimba wevalvu, isigqubuthelo sevalvu kunye nenxalenye yehinge. Amandla ayo okuvula nokuvala avela kuxinzelelo lwamanzi kwaye akadingi ukusetyenziswa ngesandla. Uxinzelelo lwamanzi kucango oluyi-flap lukhulu kunolo lukwicala langaphandle locango oluyi-flap, kwaye luyavuleka. Ngaphandle koko, luyavala luze lufikelele kwisiphumo sokugcwala kunye nokuma.