The globe valve, also known as the 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 to not leak. When the medium enters the valve from below the disc, the resistance that the operating force needs to overcome is the force of the stem and the head friction of the filler 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. , So the diameter of the valve stem should be large, otherwise the valve stem will bend failure.