色美女视频 I 国产无人区卡一卡二卡三乱码99 I 打屁股sp惩罚调教91 I 亚洲欧美va天堂人熟伦 I 国产成人专区 I 日韩国产人妻一区二区三区 I 日韩精品综合在线 I 亚洲国产视频一区二区 I 操比网 I 日韩www在线观看 I wwww亚洲熟妇久久久久 I 亚洲日韩一区精品射精 I 国内精品久久久久影院蜜芽 I 伊人国 I 自拍亚洲国产 I 在线观看91精品国产网站 I 国产日韩精品欧美一区喷水 I 99偷拍视频精品一区二区 I av综合网站 I 香蕉久久夜色 I 久草在线资源网站 I 黄色精品一区二区 I 一本一本久久a久久综合精品蜜桃 I 伊人久久天堂 I 97日日碰人人模人人澡 I 1313午夜精品美女爱做视频 I 男人的天堂色 I 日本成人免费视频 I 成人手机视频在线 I 国产精品对白刺激在线观看 I 天堂av一区二区 I 91九色蝌蚪popny I 玉足软肉夹住摩擦出白浆视频 I 男人和女人在一起污污的app I 又色又爽又黄视频网站

Introduction to the advantages of stainless steel ball valves

  • 4962 Views
  • 2014-10-07
1. The floating stainless steel ball valve has small fluid resistance, and its Drag coefficient is equal to that of pipe sections of the same length.

2. Soft sealed stainless steel ball valves have simple structure, small volume, and light weight.

3. The threaded stainless steel ball valve is tight and reliable. Currently, the sealing surface material of the ball valve is widely used in plastic, with good sealing performance, and has also been widely used in vacuum systems.

4. The flange stainless steel ball valve is easy to maintain, has a simple structure, and the sealing ring is generally movable, making disassembly and replacement more convenient.

5. When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, and when the medium passes through, it will not cause erosion of the valve sealing surface.

6. Convenient operation, quick opening and closing, with only 90 ° rotation from full opening to full closing, facilitating remote control.

7. It has a wide range of applications, with diameters ranging from a few millimeters to several meters, and can be applied from high vacuum to high pressure.