All-weather high pressure ball valves are gravity structures with overlapping seats. It is characterized by the soft contact between the valve disc and the seat with air cushion, good air tightness, not easy to frost freeze, suitable for use in cold areas. The traditional tank pressure ball valve is combined with the tank flame arrester, and the flame arrester is placed at the suction entrance of the high school pressure ball valve to completely prevent the fire source from entering the shell of the high school pressure ball valve. It has the characteristics of small size, light weight, compact structure, large ventilation, small leakage, etc., and good sealing performance, especially when working at altitude. It is very convenient to repair and clean the fire resistance disc and positive and negative pressure valve disc in the fire resistance high pressure ball valve.

The all-weather high pressure ball valve is installed on the top of the storage tank, which is to solve the positive pressure and negative pressure of the gas in the tank, so that the liquid in the tank is not hindered, and when the external liquid is input into the tank, a large amount of gas is called out (called positive pressure). If the liquid in the tank is exported, the tank must be sucked into the tank from the outside air (called negative pressure). If the high pressure ball valve is automatically closed when the work is stopped, the liquid gas in the tank will not leak out, so that the liquid quality in the tank has been favorable protection.

All-weather high school pressure ball valve application scope:

The new all-weather high school pressure ball valve is suitable for storing Class A oil with flash point below 28 ° C and Class B oil with flash point below 60 ° C, such as gasoline, benzine, methyl benzine, kerosene, light diesel, oil, crude oil and other oil products and chemical products with the same nature. All-weather high school pressure ball valve can be used with ZGB corrugated flame arrester.

All-weather high school pressure ball valve features:

New all-weather high school pressure ball valve shell selection of stainless steel, cast steel and aluminum alloy, good corrosion resistance; Simple structure, easy maintenance, safe and convenient; The performance of the new all-weather high school pressure ball valve fully meets the requirements of the Ministry of Petroleum Industry standard SY7511-87. The valve disc is made of tetrafluoroidal material, which has good low temperature resistance and anti-freezing performance.

All-weather high school pressure ball valve is a kind of high school pressure ball valve, it is fixed on the top of the storage tank ventilation device to ensure the normal state of the tank pressure, to prevent the tank overpressure or super vacuum to damage the tank, it can also reduce the evaporation loss of the body, high school pressure ball valve is usually used with the arrester.