日韩欧美爱视频_高潮喷水久久久久久久久久久久久_欧洲美洲亚洲不卡免费无码av_中文字幕日韩紧缚人妻精品一区_亚洲中文第一页

    <span id="lc3xo"></span>
    <li id="lc3xo"></li>

  1. 
    
    <span id="lc3xo"></span>

  2. <li id="lc3xo"><legend id="lc3xo"><li id="lc3xo"></li></legend></li>
    1. Check Valve

      -Size:DN15~DN400
      -Working temperature:-15~550℃
      -Working pressure:PN10~PN100
      -Body:Ductile iron、Carbon Steel、SS304、SS316、SS304L、SS316L
      -Trim:Carbon steel、SS304、SS316、SS304L、SS316L
      -Seat:EPDM、PTFE、Hard metal seal
      -Medium:Water、Steam、Nitric acid、Oil


      Ordering hotline:021-54150349

      Immediately consult
      • Product introduction
      • Product parameters
      Check valve is also called one-way valve or nonreturn valve. Its function is to prevent medium backflow in pipeline. The opening and closing parts are opened or closed by the medium flow and force to prevent the medium backflow. Applied on the pipeline for one-way flow of medium, only allow the medium to flow along one direction to prevent accidents and flow from the inlet side to the outlet side. When the inlet side pressure is lower than the outlet side, the valve disc automatically closes the channel under the action of fluid pressure and its own gravity.
      2. Stem
      3. Disc
      4. Body
      5. Spring
      6. Fixed collar
      7. Packing