Vacuum ventilate atmospheric valve is the aeration equipment installed on the storage tank and it can be used together with atmos valve to increase the absorbed amount or used signally.

1, it is suitable for storage of the flash point is lower than 20°C, first grade oils and flash point is lower than 60°Csecond grade oils, as petroleum, benzene as well as the same specification chemicals storage tanks.     

2, It can be used together with new type corrugation oil storage tank fire retardant.

1, The shell is made up of cast steel;

2, Valve disk form is made from cast steel and it is low temperature resistance and anti-freezing.

3, The structure is simple and it is easy to maintain and it is safety and convenient.

4, Vacuum ventilate atmospheric valve is tested according to GB5908-87 and SY7511-87 Standard.