亚洲AV无码国产剧情_中国无码人妻丰满熟妇啪啪软件_欧美性猛交XXXXXⅩXX_豆国产96在线 | 亚洲

        銅(tong)(tong)(tong)絲(si)口式(shi)銅(tong)(tong)(tong)截(jie)(jie)止(zhi)閥描述(shu)：裝在管路或設備上，用以(yi)啟閉管路中的介質。我公(gong)司是專業(ye)生產銷售銅(tong)(tong)(tong)絲(si)口式(shi)銅(tong)(tong)(tong)截(jie)(jie)止(zhi)閥門（全(quan)銅(tong)(tong)(tong)閘閥，全(quan)銅(tong)(tong)(tong)截(jie)(jie)止(zhi)閥，全(quan)銅(tong)(tong)(tong)過濾(lv)器，止(zhi)回閥等）供應商，質量保證，價格優惠，供貨及時。你(ni)們知道銅(tong)(tong)(tong)截(jie)(jie)止(zhi)閥的原理和優點嗎，下面我們為大家介紹(shao)一下：

        銅(tong)截止(zhi)(zhi)閥是由(you)于開閉(bi)過程中(zhong)密(mi)(mi)封(feng)(feng)面之(zhi)間摩擦力(li)小，比較耐用(yong)，開啟高(gao)度不大，制造容易(yi)，維(wei)修方(fang)便，不僅適用(yong)于中(zhong) 低壓，而且適用(yong)于高(gao)壓。截止(zhi)(zhi)閥的閉(bi)合原理(li)是，依靠閥杠壓力(li)，使閥瓣(ban)密(mi)(mi)封(feng)(feng)面與閥座密(mi)(mi)封(feng)(feng)面緊密(mi)(mi)貼合，阻(zu)止(zhi)(zhi)介質流(liu)通。銅(tong)截止(zhi)(zhi)閥只(zhi)許介質單向流(liu)動，安裝時(shi)有方(fang)向性。截止(zhi)(zhi)閥的結構 長(chang)度大于閘閥，同(tong)時(shi)流(liu)體阻(zu)力(li)大，長(chang)期運(yun)行(xing)時(shi)，密(mi)(mi)封(feng)(feng)可(ke)靠性 不強。

銅截止閥具有以下優(you)點(dian)：

1、結(jie)構簡單，制造和(he)維修比(bi)較方便。

2、工作行程(cheng)小，啟閉時(shi)間短。

3、密封性好(hao)，密封面(mian)間(jian)磨擦力小，壽命較長(chang)