Jula i-ayiniivalve yeflap engqukuva

Isango le-flap yivalve yendlela enye efakwe kwindawo yokuphuma kombhobho wokuhambisa amanzi kunye nemisebenzi yokuhambisa amanzi kunye nokucocwa kogutyulo.Isetyenziselwa ukuphuphuma okanye ukujonga i-medium, kwaye ingasetyenziselwa ukugubungela i-shaft eyahlukeneyo.Ngokwemilo, umnyango ojikelezayo kunye nomnyango we-square wokumbamba uyakhiwa.Ucango lwe-flap luqulunqwe ikakhulu ngumzimba wevalvu, isigqubuthelo sevalvu kunye necandelo lehinge.Amandla ayo okuvula kunye nokuvala avela kuxinzelelo lwamanzi kwaye ayifuni ukusebenza ngesandla.Uxinzelelo lwamanzi kumnyango we-flap likhulu kunelo kwicala langaphandle lomnyango we-flap, kwaye livula.Ngaphandle koko, ivala kwaye ifike kwi-overflow and stop effect.