Kuhlelo lokudlulisa uketshezi, i-valve iyingxenye yokulawula ebalulekile, ikakhulukazi enemisebenzi yokulawula, ukuphambukisa, ukulwa nokubuyela emuva, ukusika, kanye ne-shunt. I-valve isetshenziswa kakhulu ezimbonini nasezindaweni zomphakathi. I-valve yokushisa ephezulu wuhlobo oluvame ukusetshenziswa kuma-valve. Incazelo yayo...
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