The DYH941H electronic electric control (cut-off) butterfly valve is hard sealed and uses a 381R electronic electric actuator, with high adjustment accuracy and fast action speed. DYH941F is an electronic electric soft seal butterfly valve, with a soft seal structure for the regulating mechanism, which has a tight characteristic. The electric regulating valve has a simple structure, easy processing, and can be easily made into large diameters with low resistance coefficient and high flow capacity, making it particularly suitable for large diameters