What is the purpose of installing a check valve in the air pipe before the fan?
The fan before the wind pipe installed on the check valve to prevent the fan after the ceased operation outside of the wind because of the air pressure is blown indoors because of the inverse.
Check valveRefers to rely on the flow of the media itself and automatically open and close the valve, used to prevent media backflow valve, also known as check valve, one-way valve, counter flow valve, and back pressure valve. The check valve belongs to an automatic valve, whose main function is to prevent the backflow of medium, prevent the reverse of pump and drive motor, and release the container medium.?
FanA class of air conditioning appliances driven by the electric motor to rotate the blades of the air to drive the airflow and to exchange the air inside and outside the chamber. Also known as fan. The purpose of air exhaust is to remove the foul air in the room and regulate the temperature, humidity and sensory effects. Exhaust fans are widely used in families and public places.
