Electronic expansion valve and air conditioner provided with electronic expansion valve

An electronic expansion valve comprising:

• a first refrigerant pipe;
• a second refrigerant pipe;
• a valve body having a valve chamber connected to the first refrigerant pipe and a valve hole connecting the valve chamber to the second refrigerant pipe;
• a valve member having a valve portion inserted into the valve hole of the valve body, wherein the valve member is movable to selectively open and close the valve hole of the valve body with the valve portion, and the valve member is configured such that, when the valve member moves, the distance between an inner wall surface of the valve hole of the valve body and the valve portion of the valve member changes;
• and
• a stepper motor that moves the valve member in accordance with a pulse number input to the stepper motor,
• wherein an identifier is provided that corresponds to characteristic data of the electronic expansion valve containing a pulse number corresponding to a valve opening point measured in a process of manufacturing the electronic expansion valve,
• wherein the valve opening point is set based on the pulse number of the stepper motor at the time when the flow rate of fluid flowing through the valve hole is equal to a set value.