波多野免费一级中文电影_五月缴情综合VA_爽到高潮漏水喷水无码视频_国产一级a毛片视频爆浆_狠狠色综合久久伊人_亚洲国产综合在线观看不卡ww_大胆欧美亚洲电影在线观看_最猛欧美熟妇色麻豆_中文字幕在线高清男人的天堂_欧美日韩国产另类成人精品

主要特點及用途 Chief features and usages

1. 結(jié)構(gòu)緊湊、設(shè)計合理，閥門剛性好，通道流暢，流阻系數(shù)小。
2. 密封面采用不銹鋼和硬質(zhì)合金，使用壽命長
3. 采用柔性石墨填料、密封可靠、操作輕便靈活
4. 驅(qū)動方式分手動、電動、氣動、齒輪傳功，結(jié)構(gòu)型式：彈性楔式單閘板、剛性楔式單閘板和雙閘板型式。
5. 廣泛適用于石油化工，火力發(fā)電廠等油品、水蒸汽管路上作接通或截斷管路中介質(zhì)的啟閉裝置。

1. Compact structure,neasonnable design,good rigidity,smooth channel,small coefficient of flow resistance.
2. The sealing face uses stainless steel and carbide alloy and is of long duration
3. Using flexible graphite fillings,reliable sealing,light and nimble operation
4. Four driving ways,manually,electrically,air-ioerating and gear-driving,structure type,elastic wedge type with single gate board,right rigi-dwedge type with single or dual-gate board.
5. Widely used as the device of open or close to connect or cut off the medium inside of the pioeline of water,steam or oil goods in steam power plants