Hydraulic, pneumatic quick closure mud valve angle, is a source of hydraulic or pneumatic actuator source for off-angle type valve. Usually installed in the outer rows of the sedimentation tank bottom sidewall to exclude precipitation of silt and dirt bottom. The valve of the hydraulic cylinder piston is L-shaped cups, good sealing performance, durable rubber seal valve seal pair also, no leakage. Also enables remote control of the solenoid valve by electric two-way exchange, easy to operate, safe and reliable