Sebopeho Haholo-holo e entsoe ka 'mele oa valve, kutu ea valve, disc ea valve le reng e koalang.'Mele oa valve ke cylindrical, o nang le bolelele bo bokhutšoanyane ba axial le disc e hahiloeng.Likarolo tsa 1. Valve ea butterfly e na le litšobotsi tsa sebopeho se bonolo, boholo bo nyane, l ...
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