JM744X, JM644X diaphragm hydraulic and pneumatic quick opening mud valve, is a type of truncated valve which is operated by the hydraulic source or pneumatic source. It is usually installed on the side wall of the bottom of the sedimentation basin to exclude mud and dirt from the bottom of the pool. The valve is divided into two Chambers by nylon reinforced rubber diaphragm, which is connected to hydraulic or pneumatic source, and adopts electric or manual two-position four-way directional control valve to realize the speed sludge discharge. The valve replaces the piston with the diaphragm, has no movement friction, and is more suitable for the granular media such as mud, which greatly improves the service life of the valve.