Jula i-ayiniivalve 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. 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.