Ma valve a butterfly amapezeka paliponse m'mafakitale ambiri chifukwa chowongolera bwino komanso kuphweka. Chinthu chofunika kwambiri chomwe chimatsimikizira mphamvu ya ma valve awa ndi mpando wa valve. M'nkhaniyi, tiwona mpando wa butterfly valve
Gulu la Sofia latipatsa utumiki wapamwamba kwambiri pazaka ziwiri zapitazi. Tili ndi ubale wabwino ndi gulu la Sofia ndipo amamvetsetsa bizinesi yathu ndi zosowa zathu bwino.Pogwira nawo ntchito, ndawapeza kuti ali okondwa kwambiri, achangu, odziwa zambiri komanso owolowa manja. Ndikukhumba iwo anapitiriza bwino m'tsogolo!