The valve body of the breather valve can withstand water pressure of 0.2Mpa without seepage or deformation.The low temperature resistance of the breathing valve is better than 70% of the relative air humidity and the minimum temperature is -30 C. After 24 hours of freezing, the opening pressure of the valve disc meets the working pressure requirements (20 PA positive or negative allowable differential pressure).
When the valve disc component of GTQ type breather pipe operates, it has high sensitivity and ensures sealing after the action is completed.Sufficient space is left in the breather valve to ensure the ventilation capacity of the reservoir.Before the working pressure of the breathing valve is not reached, the nominal diameter is less than 150 mm and the leakage is less than 0.04m3/h.The nominal diameter is more than 220mm and the leakage is less than 0.4m3/h.When the breathing valve reaches the working pressure: the valve disc opens immediately to ensure the normal ventilation requirement of the storage tank.
