In order to use the breathing valve safely, periodically remove the corrugated fire resistance layer and clean it within 3-6 months to ensure that each hole in the fire resistance layer is unblocked, prevent blockage, and ensure safe and normal use.

Regularly check whether the positive and negative valve discs are flexible and whether there is any damage to the guide rod and the sealing surface of the valve disc. If there is any damage, replace it immediately. When checking for maintenance reinstallation,

The valve should ensure that the combination of the surface of the close cooperation, the valve plate up and down flexible. When the new valve is in use, it should be installed before removing the shock-proof between the valve plates, otherwise the breathing valve will fail.