Ivalve yebhola okwangoku yeyona isetyenziswa kakhulu kwishishini.Isetyenziselwa ikakhulu ukujikeleza, ukunqunyulwa, kunye nokulungelelaniswa kokuhamba.Ngokohlobo lokujikeleza, iivalve zebhola zinokwahlulwa zibe ziindlela ezimbini zebhola, iivalve zebhola ezintathu, kunye ne-four-wayball valves, edlala indima ...
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