According to different connection methods, electric butterfly valves can generally be divided into the most common electric wafer butterfly valves and electric flange butterfly valves. The sealing materials include soft seal (normal temperature and pressure) and hard seal (high temperature and high pressure). The working power supply usually includes:AC220V, AC380V, DC24V, the input signal has 4~20mA0~10v and other weak current signals. Finally, according to the control form, it is divided into switch type and adjustment type. The switch type functions as a switch; the adjustment type is used to adjust the flow rate and can accurately The flow rate is adjusted to a thousand divisions, which is also a relatively expensive electric butterfly valve .
Working principle of electric butterfly valve:
The electric butterfly regulator uses electric energy as the driving force. The valve stem is driven by an electric device to make the butterfly plate produce a 90° rotation to achieve the opening and closing of the valve. It can also receive 4-20mA or other signals from the industrial automation control system to accurately control the valve opening.In order to achieve the adjustment and control of different process parameters such as flow, temperature and pressure.