electric adjustment butterfly valve is a kind of electric valve and electric control valve. Main connection mode: flange and clamp. It is an important execution units in the field of industrial automation control. Electric adjustment butterfly valve structure principle: electric adjustment butterfly valve by quarter-turn actuators (usually 0 ~ 90 ° rotation) And the butterfly valve with mechanical connection, the installation and debugging. Divided into switch and adjust according to the way of action. Switch is connected directly to the power supply ( AC220v or other power level power supply) Through the positive and negative direction to complete switch. External regulation with AC220v power as a power source, receiving the preset parameters of industrial automation control system 4 ~ 20 ma ( 0 ~ 5 and other weak current control) Signal, complete regulating action. Electric adjustment butterfly valve applications: electric adjustment butterfly valve is suitable for flow control. Due to large butterfly valve in the pipeline pressure loss, pipeline under medium pressure should also be considered when closing the butterfly plate firmly. In addition, also need to consider the working temperature of resilient seat materials at high temperature limit. Small butterfly valve structure of small length, total height, opening and closing speed, good flow control characteristics. The structure and principles of butterfly valve is suitable for manufacturing of large diameter valves. When the butterfly valve control flow, it is important to correctly choose the size and type of butterfly valve, enable it to normal work effectively. Electric adjustment butterfly valve is suitable for fresh water, sewage, sea water, salt water, steam, gas, food, medicine, petroleum products and various kinds of acid and alkali for seal integrity, zero leakage gas test, service life, high operating temperature 10 - 150 ℃ of the pipe. Soft seal eccentric butterfly valve is suitable for the two-way ventilation dust removal pipe opening and closing and adjust. Widely used in metallurgy, light industry, electric power, petrochemical and other system pipeline and waterways. Metal to metal seal double eccentric butterfly valve is suitable for the city heat supply, gas supply, water supply and so on the regulation of gas, oil, acid, alkali pipeline and throttling device.

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