Q81F-16P無滯留球閥Q81F-16P衛(wèi)生級快裝式球閥,Q81F衛(wèi)生級快裝式球閥,Q81F-25P主要特點(diǎn)球閥的主要特點(diǎn)是本身結(jié)構(gòu)緊湊，密封可靠，結(jié)構(gòu)簡單，維修方便，密封面與球面常在閉合狀態(tài)，不易被介質(zhì)沖蝕，易于操作和維修，適