Product classification of Green Vegetables;We are from jining city, shandong province macro mountain trading co., LTD is a supplier/factory of professional manufacturers, the wholesale high quality fresh green vegetables, fresh carrots, Fresh Potato, eggplant, fresh Fresh Cabbage, fresh broccoli, green pollution-free security, high quality, nutritious vegetables research and development and manufacturing, we have a perfect after-sales service and technical support.Looking forward to your cooperation!
Green Vegetables Green Vegetables,Organic Green Vegetables,Green Fresh Vegetables,Green Healthy Vegetables Jining Sunagro Trade Co., Ltd. , http://www.sunagro-food.com
According to China's "Petrochemical Design Fire Protection Code" (GB50160-92): "A fixed liquid tank of Class A and B liquids should be equipped with fire arresters and breathing valves ". Dayo Company develops DB series new products with complete specifications. The utility model has the advantages of compact structure, light weight, large ventilation and small leakage. The product has single-exhalation valve, single-suction valve, and breathing valve . Various structural types can be combined with the flame arrester , and the required nozzle can also be prepared. 
The breathing valve is a ventilating device fixed on the top of the tank to ensure the normal state of the pressure inside the tank, to prevent the tank from being damaged by overpressure or vacuum in the tank, and to reduce the loss of liquid volatilization in the tank.