国产午夜福利短视频-国产精品刘玥久久一区-亚洲无线一二三四区手机-国产网站视频-成人av黄色-欧美城天堂网址-性色蜜桃臀x66av-免费无码观看的av在线播放-久久国产精品成人片免费-天天噜噜噜噜噜噜-中文不卡视频-人人妻人人爽人人狠狠-四虎成人久久精品无码-久草视频免费看-久久视精品

Wafer butterfly valve has the advantages of rapid installation, simple, safe, reliable, not limited by the installation site, convenient for the maintenance of pipeline and valve, vibration isolation and sound insulation and certain Angle range to overcome the difference in pipe connection caused by the false difference, to solve the heat expansion and cold contraction caused by temperature difference.It is widely used in water supply and drainage of fluid pipeline, fire control, air conditioning, gas, petroleum, chemical industry, water treatment, municipal administration, shipbuilding and other pipeline engineering as control fluid function.

Product model: D81X
Nominal diameter: DN40~200mm
Nominal pressure: PN1.0/1.6MPa
Suitable medium: water
Applicable temperature: -20~80℃
Body material: ductile iron, carbon steel, stainless steel
Seat material: rubber
Valve plate quality: ductile iron, stainless steel, aluminum bronze