How to maintain flame retardant breathing valve

The maintenance and repair of the fire breathing valve shall be conducted once a month and twice a month in winter. The method: First, gently open the valve cover, take out the vacuum valve disc and the pressure valve disc, and check whether there is oil stain and dirt at the seal between the valve disc and the valve disc guide rod and the guide rod sleeve. If there is oil or dirt, clean it up, put it back in its original position, and pull it up and down several times to check whether the opening is flexible and reliable. If everything is all right, cover the bonnet and fasten it. In the process of maintenance, if the disc is found to have scratches, wear and other abnormal phenomena, it should be replaced immediately or contacted with our company to solve it in time.