Which is the inlet and which is the outlet of airbag control valve?

What you want to ask is which air outlet and which air inlet is the airbag regulating valve? Airbag regulating valve goes in and out. Clockwise handwheel is the direction of closing the door and counterclockwise is the direction of opening the valve. Generally, there will be a flow sign on the valve body, which should be installed according to the flow direction of the valve body; The regulating valves are in and out, and so are the fire fighters.