1. Simple structure, small size, short structure length, small size, light weight, suitable for large-caliber valves.
2. When the valve seat channel is fully open, the effective flow area is larger and the fluid resistance is smaller.
3. Convenient and rapid opening and closing, and good adjustment performance.
4. The opening and closing moment is small. Since the discs on both sides of the rotating shaft are acted on by the medium basically, the direction of torque is opposite, so the opening and closing is labor-saving.
5. The sealing surface material is generally rubber or plastic, so the low pressure sealing performance is good.
