Top 508 pressure vacuum release valve li789

The vacuum pressure release valve is mainly used to release positive and negative pressure at the top of the warehouse, and can also be used in other situations with explosion-proof requirements. The vacuum pressure release valve is also known as the ash storage release valve or the ash storage vacuum release valve. The vacuum pressure release valve is mainly installed on the top of the silo as a protection device for the ash silo. When the air intake and exhaust of the ash warehouse are overpressured and the temperature changes abnormally, it is an essential protection device to protect the ash warehouse from excessive positive and negative pressure.
When the valve is in the rest position (sealed): When the pressure in the silo or ash bin is maintained within the pressure value selected by the valve, the valve cover remains in the rest position. Due to the pressure in the silo or ash bin, a force acts on the top surface of the flexible diaphragm, causing the diaphragm to be in close contact with the valve seat, thereby achieving sealing. When the valve pressure is released: When the pressure in the silo or ash bin increases to the pressure value selected by the valve, the pressure in the silo overcomes the weight of the valve seat cover and lifts the valve cover from the valve seat. At the same time, the pressure is released until the silo or ash bin. When the pressure in the ash bin drops to the same value as the pressure selected by the valve, the valve cover returns to the normal position.