Forged steel flange Globe Valve is closed parts (valve) moves along the centerline of the valve seat. According to this mobile form of valve, valve seat and through the mouth of the change is proportional to the valve stroke. As such open or close the valve stem travel relatively short, but very reliable cut-off function, and because changes in the valve seat and through the mouth of the Valve stroke is proportional, is suitable for flow regulation. Therefore, this type of valve is suitable for cutting or adjustment, and throttle use. The selection principle is:1, high temperature, high pressure piping medium or device should be selected on the cut-off valve. Fire power plants, nuclear power plants, petrochemical system of high-temperature, high pressure pipeline.
2, pipeline convection resistance strict with the pipeline. That is not the place to consider the pressure loss.
3, the choice of a small Needle Valve, instrument valve, sampling valve, pressure gauge valve.
4, a flow control or pressure regulation, but regulation accuracy is not required, and pipe diameter and relatively small, such as