Emergency shut valve(Bottom Valves) is installed on the bottom of the tanker, the tope parts is tightly sealed inside the tanker. External shear groove design limits product spillage when the tanker is crashed down, it will automatically cut off itself via this groove under the situation there’s no affectation on the sealing. This will efficiently protect the over rolled tanker from leakage to ensure the safety when transportation. This product is suitable for water, diesel, gasoline and kerosene and other light fuel, etc