The pneumatic ultra-short ball valve produced and sold by Huadian pump valve adopts intelligent control and positioning, which is matched with the electrical valve positioner, and can control the operation by entering 4-20mADC signal and 0.4~0.7MPa gas source to realize the adjustment of pressure, flow, temperature, liquid level and other parameters. It is powered by compressed air, and the valve stem drives the valve core to rotate 90° in the valve body to achieve a fully open-fully closed action. The ultra-short clamp-on pneumatic ball valve is divided into metal seal and soft seal according to its sealing performance. It is especially suitable for occasions where the medium is viscous, containing particles and fibrous properties. It can be widely used in petroleum, chemical industry, teaching equipment, light industry, high pressure equipment, pharmaceutical, papermaking, etc.