butterfly valve

• Butterfly valves for fire - protection service
  消防装置用蝶阀
• Valves for gas installations ; butterfly valves ; female threaded ends
  煤气装置阀门.蝶型阀.内螺纹接头
• Specification for envelope dimensions for butterfly valves - nps 2 to 24
  蝶阀- nps 2到24包封尺寸的规范
• Eccentric butterfly valve for heat - supply
  供热用偏心蝶阀
• Selector switches for the by - pass butterfly valve is located on mcc2
  旁通电动蝶阀的选择制设在mcc2上。
• Hydraulic control check butterfly valves
  液控止回蝶阀
• D341x double flange butterfly valve
  D341x型双法兰蝶阀
• Application of hydraulic outlet butterfly valve in circulating - water tube
  液压出口碟阀在循环水管上的应用
• Analysis and elimination of drift of hydraulic control butterfly valve
  深东供水液控蝶阀阀位漂移的解决方法
• D343h centrifugal seal butterfly valve
  J41型截止阀