[Manufacturers] alloy steel valve, DN50, PN6 alloy steel valve Cangzhou Hongyuan Pipe Industry Co., Ltd. Contact: Wang Shan 15,922,054,164 QQ: 1,494,092,364 E-mail: 15922054164@163.com valve in the fluid system, used to control the flow direction , pressure, flow device. The valve is flow or stop and apparatus able to control the flow medium (liquid, gas, powder) to the pipe and equipment. Flange gate valve control means in the pipeline fluid delivery system, it is used to change the passage cross-section and the direction of medium flow, having a deflector, the cut-off throttle, backstop, the shunt or overflow relief function. For fluid control valves, shut-off valve from the most simple to the highly complex automatic control systems used in a variety of valves, many varieties and specifications, valve of nominal diameter from tiny instrument valve to the path up to 10m industrial piping with valves. Pressure, working temperature of the valve can be used to control the flow of water, steam, oil, gas, slurry, various corrosive media, liquid metals and radioactive fluid and other types of fluid, the working pressure of the valve can be from 0.0013MPa to 1000MPa ultra-low temperature from -269 ℃ to 1430 ℃ high temperature. Valve control can be a variety of transmission methods, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic moving, electromagnetic fluid dynamic, electric hydraulic, pneumatic and hydraulic, spur gear, bevel gear drive; pressure, temperature or the role of other forms of sensing signal, according to the predetermined requirements of action, or do not rely on the sensor signal and a simple on or off, valves rely on the drive or automatic opening and closing parts for lifting, slip, Swing or rotary movement, thereby changing the size of the area of ??its flow path in order to achieve its control function.