日韩欧美一二区_亚洲无码 鲁 鲁 更健康_国产美女一区三区_中文欧美日韩无线码_中文字幕亚洲激情_国产成人精品男人的天堂538_毛片影院在线观看_很黄很湿18以免费视频_国产乱子伦精品中文_过程网站在线观看黄

HH46X, HH48X, HH49X silence slow-closing check valve series products can be used in clean water, sewage, sea water and other media of the drainpipe, not only can prevent the backflow of media, but also can effectively limit the destructive water hammer, to ensure the safety of the use of pipelines.It has novel structure, small volume, light weight, small fluid resistance, reliable sealing, smooth opening and closing, wear resistance, long service life, oil pressure, slow closing is not affected by the medium, has better energy-saving effect and other characteristics.

Product model: HH49X
Nominal diameter: DN40~600mm
Nominal pressure: PN1.0~ 2.5MPa
Applicable temperature: 0~80℃
Suitable medium: water, sewage
Main material: cast iron, ductile iron, carbon steel, etc