The flow rate and flow rate of the electric control valve mainly depend on the diameter of the electric control valve, and also the structural type of the electric control valve on the resistance of the medium. At the same time, there are certain factors such as the pressure, temperature, and the concentration of medium of the electric control valve. contact.

    The flow path area of the electric control valve has a direct relationship with the flow rate and flow rate, and the flow rate and flow rate are two quantities that are dependent on each other. When the flow rate is constant, the flow rate is large, and the flow path area can be smaller. When the flow rate is small, the flow path area can be larger. On the contrary, the flow path area is large and its flow rate is small; the flow path area is small and its flow velocity is large.

    The flow rate of the medium is large, and the diameter of the electric regulating valve can be smaller, but the resistance loss is large, and the electric regulating valve is easily damaged. The large flow rate will cause electrostatic effects on flammable and explosive materials, causing danger; the flow rate is too small, inefficient and uneconomical. For high viscosity and explosive media, take a smaller flow rate. The viscosity of the oil and the liquid with a large viscosity are selected according to the viscosity, and it is generally 0.1 to 2 m/s.

    In general, the flow rate is known and the flow rate can be determined empirically. Through the flow rate and flow can calculate the nominal diameter of the electric regulating valve.

    The electric control valve has the same diameter, its structure type is different, and the fluid resistance is not the same. Under the same conditions, the greater the resistance coefficient of the valve, the more the flow rate and the flow rate of the fluid passing through the valve decrease. The smaller the valve resistance coefficient, the lower the flow rate and the flow rate of the fluid passing through the valve.

    The choice of valve diameter should take into account the machining accuracy and dimensional deviation of the valve, as well as other factors. Valve diameter should have a certain amount of wealth, usually 15%. In actual work, the valve diameter depends on the path of the process pipeline.