I-valve yesango elithambile, eyaziwa nangokuthi i-valve yesango lesihlalo esinwebekayo, iyivalvu eyenziwa ngesandla esetshenziselwa ukuxhuma imidiya yamapayipi namaswishi kubunjiniyela bokonga amanzi. Isakhiwo sevalvu yesango elithambile sinesihlalo, isembozo sevalvu, ipuleti lesango, isembozo sokucindezela, isiqu, isondo lesandla, igasket, ...
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