Bellows gate valve opening and closing parts are plug shaped disc, sealing surface is flat or conical, disc along the center line of the fluid for linear movement. Stem movement form, there are lifting rod type (stem lifting, handwheel not lifting), there are lifting rotary rod type (handwheel and stem rotating lifting together, nut in the valve body). The globe valve is only suitable for full open and full closed, not allowed to adjust and throttle. This type of valve in the pipeline should generally be installed horizontally.

Bellows gate valves are force-sealed, so when valve closing, pressure must be applied to the disc to force the sealing face not to leak. When the medium from below the valve into the valve body, the operation force to overcome the resistance, is the friction of the stem and packing force and the thrust produced by the pressure of the medium, the force of closing the valve than the force of opening the valve, so the diameter of the stem to be large, otherwise there will be stem bending fault. In recent years, since the emergence of the sealing valve, the flow of the medium of the globe valve is changed from the top of the valve into the valve chamber, then under the action of the medium pressure, the force of closing the valve is small, and the force of opening the valve is large, and the diameter of the stem can be reduced accordingly. At the same time, under the action of the medium, this form of valve is also more rigorous.