A blowdown globe valve, also known as the cut-off valve, is a forced sealing valve. Today we mainly introduce the classification and principle of blowdown globe valves. Here is the content listl The working principle of the blowdown globe valvel Classification of blowdown globe valves The working pr

Since the emergence of self-sealing valves, the medium flow direction of the stainless Globe Check valve has changed from above the disc to enter the valve chamber. At this time, under the action of medium pressure, the force to close the valve is small, but the force to open the valve is large, and the diameter of the valve stem can be adjusted accordingly reduced. At the same time, under the action of the medium, this form of stopcock is also tighter. In addition, the inflow direction of Globe Valve is generally top-down. When the Globe Valve is opened, the opening height of the slice is 25 to 30 of the nominal periphery. The inflow has reached the outside, indicating that the stopcock has reached the completely open position. Thus, the completely open position of the Globe Valve should be determined by the stroke of the stopcock slice. Next, let's take a look at the applicable knowledge of Globe Valve.

Globe Check Valve, also known as a shut-off valve, is a forced sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak. When the medium enters the valve from the bottom of the disc, the resistance that the operating force needs to overcome is the friction between the valve stem and packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve. Therefore, the diameter of the valve stem must be large, otherwise, the failure of the valve stem to bend will occur. Next, let's take a look at Globe Valve's operation and moment analysis.