The main function of the automobile warm air valve water pipe is to control the flow of coolant, so as to adjust the temperature in the car. When the climate control system detects that the temperature in the car drops, it will send an open command to the warm air valve. After receiving the command, the motor drives the spool to rotate clockwise, overcomes the pressure of the spring, allows more coolant to flow to the heater core, increases the coolant flow rate, and then heats the heater core, generates warm air and increases the temperature in the car
Limit coolant flow : The spring restricts coolant flow by applying pressure to the spool.
coolant flow regulation : When the spool rotates, it overcomes the pressure of the spring and allows more coolant to flow to the heater core.
temperature regulation : The increased coolant flow heats the heater core, producing warm air and raising the interior temperature
