• <td id="aa00u"><button id="aa00u"></button></td>
  • <xmp id="aa00u"><menu id="aa00u"></menu>
    <td id="aa00u"><li id="aa00u"></li></td>
  • <td id="aa00u"><li id="aa00u"></li></td><table id="aa00u"><td id="aa00u"></td></table>
  • <td id="aa00u"><li id="aa00u"></li></td><td id="aa00u"></td>
  • <xmp id="aa00u">
  • <xmp id="aa00u">
  • <td id="aa00u"></td>
    <table id="aa00u"></table>
  • <td id="aa00u"><li id="aa00u"></li></td>
  • <td id="aa00u"><li id="aa00u"></li></td>
  • <li id="aa00u"><li id="aa00u"></li></li>
  • EN
    CN

    Butterfly Valve

    Butterfly valves, also known as flap valves, are regulating valves with a simple structure. They can be used for switching control of low-pressure pipeline media The closing parts (discs) are discs that rotate to open and close the valve.

    Valves can be used to control the flow of various types of fluids such as air, water, steam, corrosive media, mud, oil, liquid metals and radioactive media. They are mainly used to cut off and throttle flow in pipelines. 

    亚洲国产在人线动图_亚洲高清在线无码视频_国语久久无码高清_手机看片av免费永久不卡_一女被多男玩喷潮3p免费视频