yenziwe ngentsimbi eshayinayoivalve yeflap engqukuva

Isango le-flap yivalve yendlela enye efakwe kwindawo yokuphuma yombhobho 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. Ineentlobo ezimbini zezixhobo, intsimbi ekhatywayo kunye nentsimbi yekhabhoni. 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.