Ivalve yokukhangela kukuthembela kumandla olwelo ngokwawo ngokuzenzekelayo uvule kwaye uvale ivalve, indima yayo kukuthintela umva weendaba. Igama layo lininzi, njengeevalve zokutshekisha, iivalve zetshekhi, iingcango ezihamba kunye. Ngokwesakhiwo sinokwahlulwa sibe ngamacandelo amabini.
(1) Phakamisa: umzimba wevalvu ukuhamba ecaleni kombindi othe nkqo. Ivalve enjalo inezimbini: enye ithe tye, ixhonywe kumbhobho othe tyaba, ivalve kunye nevalve yokuvala imilo efanayo, kwaye enye ime nkqo, ifakwe kumbhobho othe nkqo.
(2) Ujingi: isihlalo sevalve sijikeleze ngaphandle kwephini lokujikeleza, ezi zivalo zinelobe enye, ivalve ephindwe kabini kunye neOrenji Peel amanqaku, kodwa umgaqo uyafana.
Umbhobho wokufunxa wevalve yenyawo umbhobho wokufunxa ukhubazekile, ubume bayo kunye nezi ntlobo zimbini zeevalvu zokumisa ngokufanayo, kodwa isiphelo sawo esisezantsi sivulekile ukuze kungene amanzi.
Ixesha lokuthumela: Sep-09-2018
