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

300X slow closed check valve is an intelligent valve installed at the outlet of water pump in water supply system of high-rise building and other water supply system to prevent backflow of medium, water hammer and water hammer.The valve has three functions: electric valve, backcheck valve and water hammer eliminator, which can effectively improve the safety and reliability of water supply system.The technical principles of slow opening, fast closing and slow closing to eliminate water hammer are integrated to prevent the production of water hammer for starting pump and stopping pump.The valve can be opened and closed automatically according to the operation rules of the pump, with large flow and small pressure loss.Suitable for valves below DN600mm diameter.

Product model: 300X
Nominal diameter: DN20~800mm
Nominal pressure: PN1.0~ 2.5MPa
Applicable temperature: 0~80℃
Suitable medium: water
Main material: cast iron, carbon steel, etc