Under normal circumstances, the breathing valve is closed, but when refueling, unloading and temperature changes, the pressure of the tanker will also change. At this time, exhaust /suction keeps the pressure of the oil tank within the specified pressure, and the breathing valve will automatically open. When it comes to emergency situations, such as fire accidents, the emergency exhaust valve opens to automatically release the internal pressure of the oil tank to avoid explosions. In the event of an overturned , the automatic sealing function of the breather valve effectively prevents unnecessary leakage of dangerous oil products.

Features:

1. Enlarging the circulation area, with fire-stop design .

2. The opening pressure is accurate and the sealing performance is good, which can effectively reduce environmental pollution .

3. Self-closing function to prevent oil backflow .