I-valve yesango elithambile, eyaziwa nangokuthi i-valve yesango lesihlalo esinwebekayo, iyivalvu eyenziwe ngesandla esetshenziselwa ukuxhuma ipayipi lepayipi nokushintsha iphrojekthi yokonga amanzi.Isakhiwo se-valve yesango lokuvala uphawu sakhiwe isihlalo sevalvu, ikhava yevalvu, ipuleti lesango, indlala, isiqu, isondo lesandla...
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