Vavu ya butterfly ndi mtundu wa valavu, yomwe imayikidwa pa chitoliro, yomwe imagwiritsidwa ntchito poyendetsa kayendedwe ka sing'anga mu chitoliro. Valavu ya butterfly imadziwika ndi mawonekedwe osavuta, kulemera kwake, zigawo za chipangizo chotumizira, thupi la valve, mbale ya valve, tsinde la valve, mpando wa valve ndi zina zotero. Ndipo zikuphatikizapo ...
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