DYH941H electronic electric adjustment (cutting) butterfly valve is hard sealed, using 381R electronic electric execution mechanism, adjustment precision high, operation speed. DYH941H electronic electric adjustment (cutting) butterfly valve is hard sealed, using 381R electronic electric execution mechanism, adjustment precision high, operation speed fast. DYH941F ye electronic electric soft seal butterfly valve, ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ The electric regulating valve structure is simple, easy to process, easy to make large caliber, resistance coefficient is small, circulation capacity is large, especially suitable for large caliber,